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<html><head><title>Python: module pexpect</title>
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<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading">
<tr bgcolor="#7799ee">
<td valign=bottom>&nbsp; 
&nbsp; <big><big>pexpect</big></big> (version 2.3)</td
><td align=right valign=bottom
><a href=".">index</a> <a href="file:/home/noah/pexpect/trunk/pexpect/pexpect.py">/home/noah/pexpect/trunk/pexpect/pexpect.py</a></td></tr></table>
 <tt>Pexpect&nbsp;is&nbsp;a&nbsp;Python&nbsp;module&nbsp;for&nbsp;spawning&nbsp;child&nbsp;applications&nbsp;and&nbsp;controlling 
them&nbsp;automatically.&nbsp;Pexpect&nbsp;can&nbsp;be&nbsp;used&nbsp;for&nbsp;automating&nbsp;interactive&nbsp;applications 
such&nbsp;as&nbsp;ssh,&nbsp;ftp,&nbsp;passwd,&nbsp;telnet,&nbsp;etc.&nbsp;It&nbsp;can&nbsp;be&nbsp;used&nbsp;to&nbsp;a&nbsp;automate&nbsp;setup 
scripts&nbsp;for&nbsp;duplicating&nbsp;software&nbsp;package&nbsp;installations&nbsp;on&nbsp;different&nbsp;servers.&nbsp;It 
can&nbsp;be&nbsp;used&nbsp;for&nbsp;automated&nbsp;software&nbsp;testing.&nbsp;Pexpect&nbsp;is&nbsp;in&nbsp;the&nbsp;spirit&nbsp;of&nbsp;Don 
Libes'&nbsp;Expect,&nbsp;but&nbsp;Pexpect&nbsp;is&nbsp;pure&nbsp;Python.&nbsp;Other&nbsp;Expect-like&nbsp;modules&nbsp;for&nbsp;Python 
require&nbsp;TCL&nbsp;and&nbsp;Expect&nbsp;or&nbsp;require&nbsp;C&nbsp;extensions&nbsp;to&nbsp;be&nbsp;compiled.&nbsp;Pexpect&nbsp;does&nbsp;not 
use&nbsp;C,&nbsp;Expect,&nbsp;or&nbsp;TCL&nbsp;extensions.&nbsp;It&nbsp;should&nbsp;work&nbsp;on&nbsp;any&nbsp;platform&nbsp;that&nbsp;supports 
the&nbsp;standard&nbsp;Python&nbsp;pty&nbsp;module.&nbsp;The&nbsp;Pexpect&nbsp;interface&nbsp;focuses&nbsp;on&nbsp;ease&nbsp;of&nbsp;use&nbsp;so 
that&nbsp;simple&nbsp;tasks&nbsp;are&nbsp;easy. 
&nbsp; 
There&nbsp;are&nbsp;two&nbsp;main&nbsp;interfaces&nbsp;to&nbsp;Pexpect&nbsp;--&nbsp;the&nbsp;function,&nbsp;<a href="#-run">run</a>()&nbsp;and&nbsp;the&nbsp;class, 
<a href="#spawn">spawn</a>.&nbsp;You&nbsp;can&nbsp;call&nbsp;the&nbsp;<a href="#-run">run</a>()&nbsp;function&nbsp;to&nbsp;execute&nbsp;a&nbsp;command&nbsp;and&nbsp;return&nbsp;the 
output.&nbsp;This&nbsp;is&nbsp;a&nbsp;handy&nbsp;replacement&nbsp;for&nbsp;os.system(). 
&nbsp; 
For&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;pexpect.<a href="#-run">run</a>('ls&nbsp;-la') 
&nbsp; 
The&nbsp;more&nbsp;powerful&nbsp;interface&nbsp;is&nbsp;the&nbsp;<a href="#spawn">spawn</a>&nbsp;class.&nbsp;You&nbsp;can&nbsp;use&nbsp;this&nbsp;to&nbsp;<a href="#spawn">spawn</a>&nbsp;an 
external&nbsp;child&nbsp;command&nbsp;and&nbsp;then&nbsp;interact&nbsp;with&nbsp;the&nbsp;child&nbsp;by&nbsp;sending&nbsp;lines&nbsp;and 
expecting&nbsp;responses. 
&nbsp; 
For&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('scp&nbsp;foo&nbsp;myname@host.example.com:.') 
&nbsp;&nbsp;&nbsp;&nbsp;child.expect&nbsp;('Password:') 
&nbsp;&nbsp;&nbsp;&nbsp;child.sendline&nbsp;(mypassword) 
&nbsp; 
This&nbsp;works&nbsp;even&nbsp;for&nbsp;commands&nbsp;that&nbsp;ask&nbsp;for&nbsp;passwords&nbsp;or&nbsp;other&nbsp;input&nbsp;outside&nbsp;of 
the&nbsp;normal&nbsp;stdio&nbsp;streams. 
&nbsp; 
Credits:&nbsp;Noah&nbsp;Spurrier,&nbsp;Richard&nbsp;Holden,&nbsp;Marco&nbsp;Molteni,&nbsp;Kimberley&nbsp;Burchett, 
Robert&nbsp;Stone,&nbsp;Hartmut&nbsp;Goebel,&nbsp;Chad&nbsp;Schroeder,&nbsp;Erick&nbsp;Tryzelaar,&nbsp;Dave&nbsp;Kirby,&nbsp;Ids 
vander&nbsp;Molen,&nbsp;George&nbsp;Todd,&nbsp;Noel&nbsp;Taylor,&nbsp;Nicolas&nbsp;D.&nbsp;Cesar,&nbsp;Alexander&nbsp;Gattin, 
Geoffrey&nbsp;Marshall,&nbsp;Francisco&nbsp;Lourenco,&nbsp;Glen&nbsp;Mabey,&nbsp;Karthik&nbsp;Gurusamy,&nbsp;Fernando 
Perez,&nbsp;Corey&nbsp;Minyard,&nbsp;Jon&nbsp;Cohen,&nbsp;Guillaume&nbsp;Chazarain,&nbsp;Andrew&nbsp;Ryan,&nbsp;Nick 
Craig-Wood,&nbsp;Andrew&nbsp;Stone,&nbsp;Jorgen&nbsp;Grahn&nbsp;(Let&nbsp;me&nbsp;know&nbsp;if&nbsp;I&nbsp;forgot&nbsp;anyone.) 
&nbsp; 
Free,&nbsp;open&nbsp;source,&nbsp;and&nbsp;all&nbsp;that&nbsp;good&nbsp;stuff. 
&nbsp; 
Permission&nbsp;is&nbsp;hereby&nbsp;granted,&nbsp;free&nbsp;of&nbsp;charge,&nbsp;to&nbsp;any&nbsp;person&nbsp;obtaining&nbsp;a&nbsp;copy&nbsp;of 
this&nbsp;software&nbsp;and&nbsp;associated&nbsp;documentation&nbsp;files&nbsp;(the&nbsp;"Software"),&nbsp;to&nbsp;deal&nbsp;in 
the&nbsp;Software&nbsp;without&nbsp;restriction,&nbsp;including&nbsp;without&nbsp;limitation&nbsp;the&nbsp;rights&nbsp;to 
use,&nbsp;copy,&nbsp;modify,&nbsp;merge,&nbsp;publish,&nbsp;distribute,&nbsp;sublicense,&nbsp;and/or&nbsp;sell&nbsp;copies 
of&nbsp;the&nbsp;Software,&nbsp;and&nbsp;to&nbsp;permit&nbsp;persons&nbsp;to&nbsp;whom&nbsp;the&nbsp;Software&nbsp;is&nbsp;furnished&nbsp;to&nbsp;do 
so,&nbsp;subject&nbsp;to&nbsp;the&nbsp;following&nbsp;conditions: 
&nbsp; 
The&nbsp;above&nbsp;copyright&nbsp;notice&nbsp;and&nbsp;this&nbsp;permission&nbsp;notice&nbsp;shall&nbsp;be&nbsp;included&nbsp;in&nbsp;all 
copies&nbsp;or&nbsp;substantial&nbsp;portions&nbsp;of&nbsp;the&nbsp;Software. 
&nbsp; 
THE&nbsp;SOFTWARE&nbsp;IS&nbsp;PROVIDED&nbsp;"AS&nbsp;IS",&nbsp;WITHOUT&nbsp;WARRANTY&nbsp;OF&nbsp;ANY&nbsp;KIND,&nbsp;EXPRESS&nbsp;OR 
IMPLIED,&nbsp;INCLUDING&nbsp;BUT&nbsp;NOT&nbsp;LIMITED&nbsp;TO&nbsp;THE&nbsp;WARRANTIES&nbsp;OF&nbsp;MERCHANTABILITY, 
FITNESS&nbsp;FOR&nbsp;A&nbsp;PARTICULAR&nbsp;PURPOSE&nbsp;AND&nbsp;NONINFRINGEMENT.&nbsp;IN&nbsp;NO&nbsp;EVENT&nbsp;SHALL&nbsp;THE 
AUTHORS&nbsp;OR&nbsp;COPYRIGHT&nbsp;HOLDERS&nbsp;BE&nbsp;LIABLE&nbsp;FOR&nbsp;ANY&nbsp;CLAIM,&nbsp;DAMAGES&nbsp;OR&nbsp;OTHER 
LIABILITY,&nbsp;WHETHER&nbsp;IN&nbsp;AN&nbsp;ACTION&nbsp;OF&nbsp;CONTRACT,&nbsp;TORT&nbsp;OR&nbsp;OTHERWISE,&nbsp;ARISING&nbsp;FROM, 
OUT&nbsp;OF&nbsp;OR&nbsp;IN&nbsp;CONNECTION&nbsp;WITH&nbsp;THE&nbsp;SOFTWARE&nbsp;OR&nbsp;THE&nbsp;USE&nbsp;OR&nbsp;OTHER&nbsp;DEALINGS&nbsp;IN&nbsp;THE 
SOFTWARE. 
&nbsp; 
Pexpect&nbsp;Copyright&nbsp;(c)&nbsp;2008&nbsp;Noah&nbsp;Spurrier 
<a href="http://pexpect.sourceforge.net/">http://pexpect.sourceforge.net/</a> 
&nbsp; 
$Id:&nbsp;pexpect.py&nbsp;507&nbsp;2007-12-27&nbsp;02:40:52Z&nbsp;noah&nbsp;$</tt>

<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#aa55cc">
<td colspan=3 valign=bottom>&nbsp; 
<big>Modules</big></td></tr>
 
<tr><td bgcolor="#aa55cc"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><table width="100%" summary="list"><tr><td width="25%" valign=top><a href="errno.html">errno</a> 
<a href="fcntl.html">fcntl</a> 
<a href="os.html">os</a> 
<a href="pty.html">pty</a> 
</td><td width="25%" valign=top><a href="re.html">re</a> 
<a href="resource.html">resource</a> 
<a href="select.html">select</a> 
<a href="signal.html">signal</a> 
</td><td width="25%" valign=top><a href="string.html">string</a> 
<a href="struct.html">struct</a> 
<a href="sys.html">sys</a> 
<a href="termios.html">termios</a> 
</td><td width="25%" valign=top><a href="time.html">time</a> 
<a href="traceback.html">traceback</a> 
<a href="tty.html">tty</a> 
<a href="types.html">types</a> 
</td></tr></table></td></tr></table>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#ee77aa">
<td colspan=3 valign=bottom>&nbsp; 
<big>Classes</big></td></tr>
 
<tr><td bgcolor="#ee77aa"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><dl>
<dt><a href="__builtin__.html#object">__builtin__.object</a>
</dt><dd>
<dl>
<dt><a href="pexpect.html#spawn">spawn</a>
</dt></dl>
</dd>
<dt><a href="exceptions.html#Exception">exceptions.Exception</a>(<a href="exceptions.html#BaseException">exceptions.BaseException</a>)
</dt><dd>
<dl>
<dt><a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a>
</dt><dd>
<dl>
<dt><a href="pexpect.html#EOF">EOF</a>
</dt><dt><a href="pexpect.html#TIMEOUT">TIMEOUT</a>
</dt></dl>
</dd>
</dl>
</dd>
</dl>
 
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#ffc8d8">
<td colspan=3 valign=bottom>&nbsp; 
<a name="EOF">class EOF</a>(<a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a>)</td></tr>
 
<tr bgcolor="#ffc8d8"><td rowspan=2><tt>&nbsp;&nbsp;&nbsp;</tt></td>
<td colspan=2><tt>Raised&nbsp;when&nbsp;<a href="#EOF">EOF</a>&nbsp;is&nbsp;read&nbsp;from&nbsp;a&nbsp;child.&nbsp;This&nbsp;usually&nbsp;means&nbsp;the&nbsp;child&nbsp;has&nbsp;exited. &nbsp;</tt></td></tr>
<tr><td>&nbsp;</td>
<td width="100%"><dl><dt>Method resolution order:</dt>
<dd><a href="pexpect.html#EOF">EOF</a></dd>
<dd><a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a></dd>
<dd><a href="exceptions.html#Exception">exceptions.Exception</a></dd>
<dd><a href="exceptions.html#BaseException">exceptions.BaseException</a></dd>
<dd><a href="__builtin__.html#object">__builtin__.object</a></dd>
</dl>
<hr>
Methods inherited from <a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a>: 
<dl><dt><a name="EOF-__init__">__init__</a>(self, value)</dt></dl>

<dl><dt><a name="EOF-get_trace">get_trace</a>(self)</dt><dd><tt>This&nbsp;returns&nbsp;an&nbsp;abbreviated&nbsp;stack&nbsp;trace&nbsp;with&nbsp;lines&nbsp;that&nbsp;only&nbsp;concern 
the&nbsp;caller.&nbsp;In&nbsp;other&nbsp;words,&nbsp;the&nbsp;stack&nbsp;trace&nbsp;inside&nbsp;the&nbsp;Pexpect&nbsp;module 
is&nbsp;not&nbsp;included.</tt></dd></dl>

<hr>
Data descriptors inherited from <a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a>: 
<dl><dt>__weakref__</dt>
<dd><tt>list&nbsp;of&nbsp;weak&nbsp;references&nbsp;to&nbsp;the&nbsp;object&nbsp;(if&nbsp;defined)</tt></dd>
</dl>
<hr>
Data and other attributes inherited from <a href="exceptions.html#Exception">exceptions.Exception</a>: 
<dl><dt>__new__ = &lt;built-in method __new__ of type object at 0x81400e0&gt;<dd><tt>T.<a href="#EOF-__new__">__new__</a>(S,&nbsp;...)&nbsp;-&gt;&nbsp;a&nbsp;new&nbsp;<a href="__builtin__.html#object">object</a>&nbsp;with&nbsp;type&nbsp;S,&nbsp;a&nbsp;subtype&nbsp;of&nbsp;T</tt></dl>

<hr>
Methods inherited from <a href="exceptions.html#BaseException">exceptions.BaseException</a>: 
<dl><dt><a name="EOF-__delattr__">__delattr__</a>(...)</dt><dd><tt>x.<a href="#EOF-__delattr__">__delattr__</a>('name')&nbsp;&lt;==&gt;&nbsp;del&nbsp;x.name</tt></dd></dl>

<dl><dt><a name="EOF-__getattribute__">__getattribute__</a>(...)</dt><dd><tt>x.<a href="#EOF-__getattribute__">__getattribute__</a>('name')&nbsp;&lt;==&gt;&nbsp;x.name</tt></dd></dl>

<dl><dt><a name="EOF-__getitem__">__getitem__</a>(...)</dt><dd><tt>x.<a href="#EOF-__getitem__">__getitem__</a>(y)&nbsp;&lt;==&gt;&nbsp;x[y]</tt></dd></dl>

<dl><dt><a name="EOF-__getslice__">__getslice__</a>(...)</dt><dd><tt>x.<a href="#EOF-__getslice__">__getslice__</a>(i,&nbsp;j)&nbsp;&lt;==&gt;&nbsp;x[i:j] 
&nbsp; 
Use&nbsp;of&nbsp;negative&nbsp;indices&nbsp;is&nbsp;not&nbsp;supported.</tt></dd></dl>

<dl><dt><a name="EOF-__reduce__">__reduce__</a>(...)</dt></dl>

<dl><dt><a name="EOF-__setattr__">__setattr__</a>(...)</dt><dd><tt>x.<a href="#EOF-__setattr__">__setattr__</a>('name',&nbsp;value)&nbsp;&lt;==&gt;&nbsp;x.name&nbsp;=&nbsp;value</tt></dd></dl>

<dl><dt><a name="EOF-__setstate__">__setstate__</a>(...)</dt></dl>

<hr>
Data descriptors inherited from <a href="exceptions.html#BaseException">exceptions.BaseException</a>: 
<dl><dt>__dict__</dt>
</dl>
<dl><dt>args</dt>
</dl>
<dl><dt>message</dt>
<dd><tt>exception&nbsp;message</tt></dd>
</dl>
</td></tr></table> 
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#ffc8d8">
<td colspan=3 valign=bottom>&nbsp; 
<a name="ExceptionPexpect">class ExceptionPexpect</a>(<a href="exceptions.html#Exception">exceptions.Exception</a>)</td></tr>
 
<tr bgcolor="#ffc8d8"><td rowspan=2><tt>&nbsp;&nbsp;&nbsp;</tt></td>
<td colspan=2><tt>Base&nbsp;class&nbsp;for&nbsp;all&nbsp;exceptions&nbsp;raised&nbsp;by&nbsp;this&nbsp;module. &nbsp;</tt></td></tr>
<tr><td>&nbsp;</td>
<td width="100%"><dl><dt>Method resolution order:</dt>
<dd><a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a></dd>
<dd><a href="exceptions.html#Exception">exceptions.Exception</a></dd>
<dd><a href="exceptions.html#BaseException">exceptions.BaseException</a></dd>
<dd><a href="__builtin__.html#object">__builtin__.object</a></dd>
</dl>
<hr>
Methods defined here: 
<dl><dt><a name="ExceptionPexpect-__init__">__init__</a>(self, value)</dt></dl>

<dl><dt><a name="ExceptionPexpect-get_trace">get_trace</a>(self)</dt><dd><tt>This&nbsp;returns&nbsp;an&nbsp;abbreviated&nbsp;stack&nbsp;trace&nbsp;with&nbsp;lines&nbsp;that&nbsp;only&nbsp;concern 
the&nbsp;caller.&nbsp;In&nbsp;other&nbsp;words,&nbsp;the&nbsp;stack&nbsp;trace&nbsp;inside&nbsp;the&nbsp;Pexpect&nbsp;module 
is&nbsp;not&nbsp;included.</tt></dd></dl>

<hr>
Data descriptors defined here: 
<dl><dt>__weakref__</dt>
<dd><tt>list&nbsp;of&nbsp;weak&nbsp;references&nbsp;to&nbsp;the&nbsp;object&nbsp;(if&nbsp;defined)</tt></dd>
</dl>
<hr>
Data and other attributes inherited from <a href="exceptions.html#Exception">exceptions.Exception</a>: 
<dl><dt>__new__ = &lt;built-in method __new__ of type object at 0x81400e0&gt;<dd><tt>T.<a href="#ExceptionPexpect-__new__">__new__</a>(S,&nbsp;...)&nbsp;-&gt;&nbsp;a&nbsp;new&nbsp;<a href="__builtin__.html#object">object</a>&nbsp;with&nbsp;type&nbsp;S,&nbsp;a&nbsp;subtype&nbsp;of&nbsp;T</tt></dl>

<hr>
Methods inherited from <a href="exceptions.html#BaseException">exceptions.BaseException</a>: 
<dl><dt><a name="ExceptionPexpect-__delattr__">__delattr__</a>(...)</dt><dd><tt>x.<a href="#ExceptionPexpect-__delattr__">__delattr__</a>('name')&nbsp;&lt;==&gt;&nbsp;del&nbsp;x.name</tt></dd></dl>

<dl><dt><a name="ExceptionPexpect-__getattribute__">__getattribute__</a>(...)</dt><dd><tt>x.<a href="#ExceptionPexpect-__getattribute__">__getattribute__</a>('name')&nbsp;&lt;==&gt;&nbsp;x.name</tt></dd></dl>

<dl><dt><a name="ExceptionPexpect-__getitem__">__getitem__</a>(...)</dt><dd><tt>x.<a href="#ExceptionPexpect-__getitem__">__getitem__</a>(y)&nbsp;&lt;==&gt;&nbsp;x[y]</tt></dd></dl>

<dl><dt><a name="ExceptionPexpect-__getslice__">__getslice__</a>(...)</dt><dd><tt>x.<a href="#ExceptionPexpect-__getslice__">__getslice__</a>(i,&nbsp;j)&nbsp;&lt;==&gt;&nbsp;x[i:j] 
&nbsp; 
Use&nbsp;of&nbsp;negative&nbsp;indices&nbsp;is&nbsp;not&nbsp;supported.</tt></dd></dl>

<dl><dt><a name="ExceptionPexpect-__reduce__">__reduce__</a>(...)</dt></dl>

<dl><dt><a name="ExceptionPexpect-__setattr__">__setattr__</a>(...)</dt><dd><tt>x.<a href="#ExceptionPexpect-__setattr__">__setattr__</a>('name',&nbsp;value)&nbsp;&lt;==&gt;&nbsp;x.name&nbsp;=&nbsp;value</tt></dd></dl>

<dl><dt><a name="ExceptionPexpect-__setstate__">__setstate__</a>(...)</dt></dl>

<hr>
Data descriptors inherited from <a href="exceptions.html#BaseException">exceptions.BaseException</a>: 
<dl><dt>__dict__</dt>
</dl>
<dl><dt>args</dt>
</dl>
<dl><dt>message</dt>
<dd><tt>exception&nbsp;message</tt></dd>
</dl>
</td></tr></table> 
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#ffc8d8">
<td colspan=3 valign=bottom>&nbsp; 
<a name="TIMEOUT">class TIMEOUT</a>(<a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a>)</td></tr>
 
<tr bgcolor="#ffc8d8"><td rowspan=2><tt>&nbsp;&nbsp;&nbsp;</tt></td>
<td colspan=2><tt>Raised&nbsp;when&nbsp;a&nbsp;read&nbsp;time&nbsp;exceeds&nbsp;the&nbsp;timeout. &nbsp;</tt></td></tr>
<tr><td>&nbsp;</td>
<td width="100%"><dl><dt>Method resolution order:</dt>
<dd><a href="pexpect.html#TIMEOUT">TIMEOUT</a></dd>
<dd><a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a></dd>
<dd><a href="exceptions.html#Exception">exceptions.Exception</a></dd>
<dd><a href="exceptions.html#BaseException">exceptions.BaseException</a></dd>
<dd><a href="__builtin__.html#object">__builtin__.object</a></dd>
</dl>
<hr>
Methods inherited from <a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a>: 
<dl><dt><a name="TIMEOUT-__init__">__init__</a>(self, value)</dt></dl>

<dl><dt><a name="TIMEOUT-get_trace">get_trace</a>(self)</dt><dd><tt>This&nbsp;returns&nbsp;an&nbsp;abbreviated&nbsp;stack&nbsp;trace&nbsp;with&nbsp;lines&nbsp;that&nbsp;only&nbsp;concern 
the&nbsp;caller.&nbsp;In&nbsp;other&nbsp;words,&nbsp;the&nbsp;stack&nbsp;trace&nbsp;inside&nbsp;the&nbsp;Pexpect&nbsp;module 
is&nbsp;not&nbsp;included.</tt></dd></dl>

<hr>
Data descriptors inherited from <a href="pexpect.html#ExceptionPexpect">ExceptionPexpect</a>: 
<dl><dt>__weakref__</dt>
<dd><tt>list&nbsp;of&nbsp;weak&nbsp;references&nbsp;to&nbsp;the&nbsp;object&nbsp;(if&nbsp;defined)</tt></dd>
</dl>
<hr>
Data and other attributes inherited from <a href="exceptions.html#Exception">exceptions.Exception</a>: 
<dl><dt>__new__ = &lt;built-in method __new__ of type object at 0x81400e0&gt;<dd><tt>T.<a href="#TIMEOUT-__new__">__new__</a>(S,&nbsp;...)&nbsp;-&gt;&nbsp;a&nbsp;new&nbsp;<a href="__builtin__.html#object">object</a>&nbsp;with&nbsp;type&nbsp;S,&nbsp;a&nbsp;subtype&nbsp;of&nbsp;T</tt></dl>

<hr>
Methods inherited from <a href="exceptions.html#BaseException">exceptions.BaseException</a>: 
<dl><dt><a name="TIMEOUT-__delattr__">__delattr__</a>(...)</dt><dd><tt>x.<a href="#TIMEOUT-__delattr__">__delattr__</a>('name')&nbsp;&lt;==&gt;&nbsp;del&nbsp;x.name</tt></dd></dl>

<dl><dt><a name="TIMEOUT-__getattribute__">__getattribute__</a>(...)</dt><dd><tt>x.<a href="#TIMEOUT-__getattribute__">__getattribute__</a>('name')&nbsp;&lt;==&gt;&nbsp;x.name</tt></dd></dl>

<dl><dt><a name="TIMEOUT-__getitem__">__getitem__</a>(...)</dt><dd><tt>x.<a href="#TIMEOUT-__getitem__">__getitem__</a>(y)&nbsp;&lt;==&gt;&nbsp;x[y]</tt></dd></dl>

<dl><dt><a name="TIMEOUT-__getslice__">__getslice__</a>(...)</dt><dd><tt>x.<a href="#TIMEOUT-__getslice__">__getslice__</a>(i,&nbsp;j)&nbsp;&lt;==&gt;&nbsp;x[i:j] 
&nbsp; 
Use&nbsp;of&nbsp;negative&nbsp;indices&nbsp;is&nbsp;not&nbsp;supported.</tt></dd></dl>

<dl><dt><a name="TIMEOUT-__reduce__">__reduce__</a>(...)</dt></dl>

<dl><dt><a name="TIMEOUT-__setattr__">__setattr__</a>(...)</dt><dd><tt>x.<a href="#TIMEOUT-__setattr__">__setattr__</a>('name',&nbsp;value)&nbsp;&lt;==&gt;&nbsp;x.name&nbsp;=&nbsp;value</tt></dd></dl>

<dl><dt><a name="TIMEOUT-__setstate__">__setstate__</a>(...)</dt></dl>

<hr>
Data descriptors inherited from <a href="exceptions.html#BaseException">exceptions.BaseException</a>: 
<dl><dt>__dict__</dt>
</dl>
<dl><dt>args</dt>
</dl>
<dl><dt>message</dt>
<dd><tt>exception&nbsp;message</tt></dd>
</dl>
</td></tr></table> 
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#ffc8d8">
<td colspan=3 valign=bottom>&nbsp; 
<a name="spawn">class spawn</a>(<a href="__builtin__.html#object">__builtin__.object</a>)</td></tr>
 
<tr bgcolor="#ffc8d8"><td rowspan=2><tt>&nbsp;&nbsp;&nbsp;</tt></td>
<td colspan=2><tt>This&nbsp;is&nbsp;the&nbsp;main&nbsp;class&nbsp;interface&nbsp;for&nbsp;Pexpect.&nbsp;Use&nbsp;this&nbsp;class&nbsp;to&nbsp;start 
and&nbsp;control&nbsp;child&nbsp;applications. &nbsp;</tt></td></tr>
<tr><td>&nbsp;</td>
<td width="100%">Methods defined here: 
<dl><dt><a name="spawn-__del__">__del__</a>(self)</dt><dd><tt>This&nbsp;makes&nbsp;sure&nbsp;that&nbsp;no&nbsp;system&nbsp;resources&nbsp;are&nbsp;left&nbsp;open.&nbsp;Python&nbsp;only 
garbage&nbsp;collects&nbsp;Python&nbsp;objects.&nbsp;OS&nbsp;file&nbsp;descriptors&nbsp;are&nbsp;not&nbsp;Python 
objects,&nbsp;so&nbsp;they&nbsp;must&nbsp;be&nbsp;handled&nbsp;explicitly.&nbsp;If&nbsp;the&nbsp;child&nbsp;file 
descriptor&nbsp;was&nbsp;opened&nbsp;outside&nbsp;of&nbsp;this&nbsp;class&nbsp;(passed&nbsp;to&nbsp;the&nbsp;constructor) 
then&nbsp;this&nbsp;does&nbsp;not&nbsp;close&nbsp;it.</tt></dd></dl>

<dl><dt><a name="spawn-__init__">__init__</a>(self, command, args=[], timeout=30, maxread=2000, searchwindowsize=None, logfile=None, cwd=None, env=None)</dt><dd><tt>This&nbsp;is&nbsp;the&nbsp;constructor.&nbsp;The&nbsp;command&nbsp;parameter&nbsp;may&nbsp;be&nbsp;a&nbsp;string&nbsp;that 
includes&nbsp;a&nbsp;command&nbsp;and&nbsp;any&nbsp;arguments&nbsp;to&nbsp;the&nbsp;command.&nbsp;For&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>&nbsp;('/usr/bin/ftp') 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>&nbsp;('/usr/bin/ssh&nbsp;user@example.com') 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>&nbsp;('ls&nbsp;-latr&nbsp;/tmp') 
&nbsp; 
You&nbsp;may&nbsp;also&nbsp;construct&nbsp;it&nbsp;with&nbsp;a&nbsp;list&nbsp;of&nbsp;arguments&nbsp;like&nbsp;so:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>&nbsp;('/usr/bin/ftp',&nbsp;[]) 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>&nbsp;('/usr/bin/ssh',&nbsp;['user@example.com']) 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>&nbsp;('ls',&nbsp;['-latr',&nbsp;'/tmp']) 
&nbsp; 
After&nbsp;this&nbsp;the&nbsp;child&nbsp;application&nbsp;will&nbsp;be&nbsp;created&nbsp;and&nbsp;will&nbsp;be&nbsp;ready&nbsp;to 
talk&nbsp;to.&nbsp;For&nbsp;normal&nbsp;use,&nbsp;see&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;and&nbsp;<a href="#spawn-send">send</a>()&nbsp;and&nbsp;<a href="#spawn-sendline">sendline</a>(). 
&nbsp; 
Remember&nbsp;that&nbsp;Pexpect&nbsp;does&nbsp;NOT&nbsp;interpret&nbsp;shell&nbsp;meta&nbsp;characters&nbsp;such&nbsp;as 
redirect,&nbsp;pipe,&nbsp;or&nbsp;wild&nbsp;cards&nbsp;(&gt;,&nbsp;|,&nbsp;or&nbsp;*).&nbsp;This&nbsp;is&nbsp;a&nbsp;common&nbsp;mistake. 
If&nbsp;you&nbsp;want&nbsp;to&nbsp;run&nbsp;a&nbsp;command&nbsp;and&nbsp;pipe&nbsp;it&nbsp;through&nbsp;another&nbsp;command&nbsp;then 
you&nbsp;must&nbsp;also&nbsp;start&nbsp;a&nbsp;shell.&nbsp;For&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('/bin/bash&nbsp;-c&nbsp;"ls&nbsp;-l&nbsp;|&nbsp;grep&nbsp;LOG&nbsp;&gt;&nbsp;log_list.txt"') 
&nbsp;&nbsp;&nbsp;&nbsp;child.<a href="#spawn-expect">expect</a>(pexpect.<a href="#EOF">EOF</a>) 
&nbsp; 
The&nbsp;second&nbsp;form&nbsp;of&nbsp;<a href="#spawn">spawn</a>&nbsp;(where&nbsp;you&nbsp;pass&nbsp;a&nbsp;list&nbsp;of&nbsp;arguments)&nbsp;is&nbsp;useful 
in&nbsp;situations&nbsp;where&nbsp;you&nbsp;wish&nbsp;to&nbsp;<a href="#spawn">spawn</a>&nbsp;a&nbsp;command&nbsp;and&nbsp;pass&nbsp;it&nbsp;its&nbsp;own 
argument&nbsp;list.&nbsp;This&nbsp;can&nbsp;make&nbsp;syntax&nbsp;more&nbsp;clear.&nbsp;For&nbsp;example,&nbsp;the 
following&nbsp;is&nbsp;equivalent&nbsp;to&nbsp;the&nbsp;previous&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;shell_cmd&nbsp;=&nbsp;'ls&nbsp;-l&nbsp;|&nbsp;grep&nbsp;LOG&nbsp;&gt;&nbsp;log_list.txt' 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('/bin/bash',&nbsp;['-c',&nbsp;shell_cmd]) 
&nbsp;&nbsp;&nbsp;&nbsp;child.<a href="#spawn-expect">expect</a>(pexpect.<a href="#EOF">EOF</a>) 
&nbsp; 
The&nbsp;maxread&nbsp;attribute&nbsp;sets&nbsp;the&nbsp;read&nbsp;buffer&nbsp;size.&nbsp;This&nbsp;is&nbsp;maximum&nbsp;number 
of&nbsp;bytes&nbsp;that&nbsp;Pexpect&nbsp;will&nbsp;try&nbsp;to&nbsp;read&nbsp;from&nbsp;a&nbsp;TTY&nbsp;at&nbsp;one&nbsp;time.&nbsp;Setting 
the&nbsp;maxread&nbsp;size&nbsp;to&nbsp;1&nbsp;will&nbsp;turn&nbsp;off&nbsp;buffering.&nbsp;Setting&nbsp;the&nbsp;maxread 
value&nbsp;higher&nbsp;may&nbsp;help&nbsp;performance&nbsp;in&nbsp;cases&nbsp;where&nbsp;large&nbsp;amounts&nbsp;of 
output&nbsp;are&nbsp;read&nbsp;back&nbsp;from&nbsp;the&nbsp;child.&nbsp;This&nbsp;feature&nbsp;is&nbsp;useful&nbsp;in 
conjunction&nbsp;with&nbsp;searchwindowsize. 
&nbsp; 
The&nbsp;searchwindowsize&nbsp;attribute&nbsp;sets&nbsp;the&nbsp;how&nbsp;far&nbsp;back&nbsp;in&nbsp;the&nbsp;incomming 
seach&nbsp;buffer&nbsp;Pexpect&nbsp;will&nbsp;search&nbsp;for&nbsp;pattern&nbsp;matches.&nbsp;Every&nbsp;time 
Pexpect&nbsp;reads&nbsp;some&nbsp;data&nbsp;from&nbsp;the&nbsp;child&nbsp;it&nbsp;will&nbsp;append&nbsp;the&nbsp;data&nbsp;to&nbsp;the 
incomming&nbsp;buffer.&nbsp;The&nbsp;default&nbsp;is&nbsp;to&nbsp;search&nbsp;from&nbsp;the&nbsp;beginning&nbsp;of&nbsp;the 
imcomming&nbsp;buffer&nbsp;each&nbsp;time&nbsp;new&nbsp;data&nbsp;is&nbsp;read&nbsp;from&nbsp;the&nbsp;child.&nbsp;But&nbsp;this&nbsp;is 
very&nbsp;inefficient&nbsp;if&nbsp;you&nbsp;are&nbsp;running&nbsp;a&nbsp;command&nbsp;that&nbsp;generates&nbsp;a&nbsp;large 
amount&nbsp;of&nbsp;data&nbsp;where&nbsp;you&nbsp;want&nbsp;to&nbsp;match&nbsp;The&nbsp;searchwindowsize&nbsp;does&nbsp;not 
effect&nbsp;the&nbsp;size&nbsp;of&nbsp;the&nbsp;incomming&nbsp;data&nbsp;buffer.&nbsp;You&nbsp;will&nbsp;still&nbsp;have 
access&nbsp;to&nbsp;the&nbsp;full&nbsp;buffer&nbsp;after&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;returns. 
&nbsp; 
The&nbsp;logfile&nbsp;member&nbsp;turns&nbsp;on&nbsp;or&nbsp;off&nbsp;logging.&nbsp;All&nbsp;input&nbsp;and&nbsp;output&nbsp;will 
be&nbsp;copied&nbsp;to&nbsp;the&nbsp;given&nbsp;file&nbsp;<a href="__builtin__.html#object">object</a>.&nbsp;Set&nbsp;logfile&nbsp;to&nbsp;None&nbsp;to&nbsp;stop 
logging.&nbsp;This&nbsp;is&nbsp;the&nbsp;default.&nbsp;Set&nbsp;logfile&nbsp;to&nbsp;sys.stdout&nbsp;to&nbsp;echo 
everything&nbsp;to&nbsp;standard&nbsp;output.&nbsp;The&nbsp;logfile&nbsp;is&nbsp;flushed&nbsp;after&nbsp;each&nbsp;write. 
&nbsp; 
Example&nbsp;log&nbsp;input&nbsp;and&nbsp;output&nbsp;to&nbsp;a&nbsp;file:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('some_command') 
&nbsp;&nbsp;&nbsp;&nbsp;fout&nbsp;=&nbsp;file('mylog.txt','w') 
&nbsp;&nbsp;&nbsp;&nbsp;child.logfile&nbsp;=&nbsp;fout 
&nbsp; 
Example&nbsp;log&nbsp;to&nbsp;stdout:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('some_command') 
&nbsp;&nbsp;&nbsp;&nbsp;child.logfile&nbsp;=&nbsp;sys.stdout 
&nbsp; 
The&nbsp;logfile_read&nbsp;and&nbsp;logfile_send&nbsp;members&nbsp;can&nbsp;be&nbsp;used&nbsp;to&nbsp;separately&nbsp;log 
the&nbsp;input&nbsp;from&nbsp;the&nbsp;child&nbsp;and&nbsp;output&nbsp;sent&nbsp;to&nbsp;the&nbsp;child.&nbsp;Sometimes&nbsp;you 
don't&nbsp;want&nbsp;to&nbsp;see&nbsp;everything&nbsp;you&nbsp;write&nbsp;to&nbsp;the&nbsp;child.&nbsp;You&nbsp;only&nbsp;want&nbsp;to 
log&nbsp;what&nbsp;the&nbsp;child&nbsp;sends&nbsp;back.&nbsp;For&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('some_command') 
&nbsp;&nbsp;&nbsp;&nbsp;child.logfile_read&nbsp;=&nbsp;sys.stdout 
&nbsp; 
To&nbsp;separately&nbsp;log&nbsp;output&nbsp;sent&nbsp;to&nbsp;the&nbsp;child&nbsp;use&nbsp;logfile_send:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;self.logfile_send&nbsp;=&nbsp;fout 
&nbsp; 
The&nbsp;delaybeforesend&nbsp;helps&nbsp;overcome&nbsp;a&nbsp;weird&nbsp;behavior&nbsp;that&nbsp;many&nbsp;users 
were&nbsp;experiencing.&nbsp;The&nbsp;typical&nbsp;problem&nbsp;was&nbsp;that&nbsp;a&nbsp;user&nbsp;would&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;a 
"Password:"&nbsp;prompt&nbsp;and&nbsp;then&nbsp;immediately&nbsp;call&nbsp;<a href="#spawn-sendline">sendline</a>()&nbsp;to&nbsp;send&nbsp;the 
password.&nbsp;The&nbsp;user&nbsp;would&nbsp;then&nbsp;see&nbsp;that&nbsp;their&nbsp;password&nbsp;was&nbsp;echoed&nbsp;back 
to&nbsp;them.&nbsp;Passwords&nbsp;don't&nbsp;normally&nbsp;echo.&nbsp;The&nbsp;problem&nbsp;is&nbsp;caused&nbsp;by&nbsp;the 
fact&nbsp;that&nbsp;most&nbsp;applications&nbsp;print&nbsp;out&nbsp;the&nbsp;"Password"&nbsp;prompt&nbsp;and&nbsp;then 
turn&nbsp;off&nbsp;stdin&nbsp;echo,&nbsp;but&nbsp;if&nbsp;you&nbsp;send&nbsp;your&nbsp;password&nbsp;before&nbsp;the 
application&nbsp;turned&nbsp;off&nbsp;echo,&nbsp;then&nbsp;you&nbsp;get&nbsp;your&nbsp;password&nbsp;echoed. 
Normally&nbsp;this&nbsp;wouldn't&nbsp;be&nbsp;a&nbsp;problem&nbsp;when&nbsp;interacting&nbsp;with&nbsp;a&nbsp;human&nbsp;at&nbsp;a 
real&nbsp;keyboard.&nbsp;If&nbsp;you&nbsp;introduce&nbsp;a&nbsp;slight&nbsp;delay&nbsp;just&nbsp;before&nbsp;writing&nbsp;then 
this&nbsp;seems&nbsp;to&nbsp;clear&nbsp;up&nbsp;the&nbsp;problem.&nbsp;This&nbsp;was&nbsp;such&nbsp;a&nbsp;common&nbsp;problem&nbsp;for 
many&nbsp;users&nbsp;that&nbsp;I&nbsp;decided&nbsp;that&nbsp;the&nbsp;default&nbsp;pexpect&nbsp;behavior&nbsp;should&nbsp;be 
to&nbsp;sleep&nbsp;just&nbsp;before&nbsp;writing&nbsp;to&nbsp;the&nbsp;child&nbsp;application.&nbsp;1/20th&nbsp;of&nbsp;a 
second&nbsp;(50&nbsp;ms)&nbsp;seems&nbsp;to&nbsp;be&nbsp;enough&nbsp;to&nbsp;clear&nbsp;up&nbsp;the&nbsp;problem.&nbsp;You&nbsp;can&nbsp;set 
delaybeforesend&nbsp;to&nbsp;0&nbsp;to&nbsp;return&nbsp;to&nbsp;the&nbsp;old&nbsp;behavior.&nbsp;Most&nbsp;Linux&nbsp;machines 
don't&nbsp;like&nbsp;this&nbsp;to&nbsp;be&nbsp;below&nbsp;0.03.&nbsp;I&nbsp;don't&nbsp;know&nbsp;why. 
&nbsp; 
Note&nbsp;that&nbsp;<a href="#spawn">spawn</a>&nbsp;is&nbsp;clever&nbsp;about&nbsp;finding&nbsp;commands&nbsp;on&nbsp;your&nbsp;path. 
It&nbsp;uses&nbsp;the&nbsp;same&nbsp;logic&nbsp;that&nbsp;"which"&nbsp;uses&nbsp;to&nbsp;find&nbsp;executables. 
&nbsp; 
If&nbsp;you&nbsp;wish&nbsp;to&nbsp;get&nbsp;the&nbsp;exit&nbsp;status&nbsp;of&nbsp;the&nbsp;child&nbsp;you&nbsp;must&nbsp;call&nbsp;the 
<a href="#spawn-close">close</a>()&nbsp;method.&nbsp;The&nbsp;exit&nbsp;or&nbsp;signal&nbsp;status&nbsp;of&nbsp;the&nbsp;child&nbsp;will&nbsp;be&nbsp;stored 
in&nbsp;self.exitstatus&nbsp;or&nbsp;self.signalstatus.&nbsp;If&nbsp;the&nbsp;child&nbsp;exited&nbsp;normally 
then&nbsp;exitstatus&nbsp;will&nbsp;store&nbsp;the&nbsp;exit&nbsp;return&nbsp;code&nbsp;and&nbsp;signalstatus&nbsp;will 
be&nbsp;None.&nbsp;If&nbsp;the&nbsp;child&nbsp;was&nbsp;terminated&nbsp;abnormally&nbsp;with&nbsp;a&nbsp;signal&nbsp;then 
signalstatus&nbsp;will&nbsp;store&nbsp;the&nbsp;signal&nbsp;value&nbsp;and&nbsp;exitstatus&nbsp;will&nbsp;be&nbsp;None. 
If&nbsp;you&nbsp;need&nbsp;more&nbsp;detail&nbsp;you&nbsp;can&nbsp;also&nbsp;read&nbsp;the&nbsp;self.status&nbsp;member&nbsp;which 
stores&nbsp;the&nbsp;status&nbsp;returned&nbsp;by&nbsp;os.waitpid.&nbsp;You&nbsp;can&nbsp;interpret&nbsp;this&nbsp;using 
os.WIFEXITED/os.WEXITSTATUS&nbsp;or&nbsp;os.WIFSIGNALED/os.TERMSIG.</tt></dd></dl>

<dl><dt><a name="spawn-__iter__">__iter__</a>(self)</dt><dd><tt>This&nbsp;is&nbsp;to&nbsp;support&nbsp;iterators&nbsp;over&nbsp;a&nbsp;file-like&nbsp;<a href="__builtin__.html#object">object</a>.</tt></dd></dl>

<dl><dt><a name="spawn-__str__">__str__</a>(self)</dt><dd><tt>This&nbsp;returns&nbsp;a&nbsp;human-readable&nbsp;string&nbsp;that&nbsp;represents&nbsp;the&nbsp;state&nbsp;of 
the&nbsp;<a href="__builtin__.html#object">object</a>.</tt></dd></dl>

<dl><dt><a name="spawn-close">close</a>(self, force=True)</dt><dd><tt>This&nbsp;closes&nbsp;the&nbsp;connection&nbsp;with&nbsp;the&nbsp;child&nbsp;application.&nbsp;Note&nbsp;that 
calling&nbsp;<a href="#spawn-close">close</a>()&nbsp;more&nbsp;than&nbsp;once&nbsp;is&nbsp;valid.&nbsp;This&nbsp;emulates&nbsp;standard&nbsp;Python 
behavior&nbsp;with&nbsp;files.&nbsp;Set&nbsp;force&nbsp;to&nbsp;True&nbsp;if&nbsp;you&nbsp;want&nbsp;to&nbsp;make&nbsp;sure&nbsp;that 
the&nbsp;child&nbsp;is&nbsp;terminated&nbsp;(SIGKILL&nbsp;is&nbsp;sent&nbsp;if&nbsp;the&nbsp;child&nbsp;ignores&nbsp;SIGHUP 
and&nbsp;SIGINT).</tt></dd></dl>

<dl><dt><a name="spawn-compile_pattern_list">compile_pattern_list</a>(self, patterns)</dt><dd><tt>This&nbsp;compiles&nbsp;a&nbsp;pattern-string&nbsp;or&nbsp;a&nbsp;list&nbsp;of&nbsp;pattern-strings. 
Patterns&nbsp;must&nbsp;be&nbsp;a&nbsp;StringType,&nbsp;<a href="#EOF">EOF</a>,&nbsp;<a href="#TIMEOUT">TIMEOUT</a>,&nbsp;SRE_Pattern,&nbsp;or&nbsp;a&nbsp;list&nbsp;of 
those.&nbsp;Patterns&nbsp;may&nbsp;also&nbsp;be&nbsp;None&nbsp;which&nbsp;results&nbsp;in&nbsp;an&nbsp;empty&nbsp;list&nbsp;(you 
might&nbsp;do&nbsp;this&nbsp;if&nbsp;waiting&nbsp;for&nbsp;an&nbsp;<a href="#EOF">EOF</a>&nbsp;or&nbsp;<a href="#TIMEOUT">TIMEOUT</a>&nbsp;condition&nbsp;without 
expecting&nbsp;any&nbsp;pattern). 
&nbsp; 
This&nbsp;is&nbsp;used&nbsp;by&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;when&nbsp;calling&nbsp;<a href="#spawn-expect_list">expect_list</a>().&nbsp;Thus&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;is 
nothing&nbsp;more&nbsp;than:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cpl&nbsp;=&nbsp;<a href="#spawn-compile_pattern_list">compile_pattern_list</a>(pl) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;<a href="#spawn-expect_list">expect_list</a>(cpl,&nbsp;timeout) 
&nbsp; 
If&nbsp;you&nbsp;are&nbsp;using&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;within&nbsp;a&nbsp;loop&nbsp;it&nbsp;may&nbsp;be&nbsp;more 
efficient&nbsp;to&nbsp;compile&nbsp;the&nbsp;patterns&nbsp;first&nbsp;and&nbsp;then&nbsp;call&nbsp;<a href="#spawn-expect_list">expect_list</a>(). 
This&nbsp;avoid&nbsp;calls&nbsp;in&nbsp;a&nbsp;loop&nbsp;to&nbsp;<a href="#spawn-compile_pattern_list">compile_pattern_list</a>():: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cpl&nbsp;=&nbsp;<a href="#spawn-compile_pattern_list">compile_pattern_list</a>(my_pattern) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while&nbsp;some_condition: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;... 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;i&nbsp;=&nbsp;<a href="#spawn-expect_list">expect_list</a>(clp,&nbsp;timeout) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;...</tt></dd></dl>

<dl><dt><a name="spawn-eof">eof</a>(self)</dt><dd><tt>This&nbsp;returns&nbsp;True&nbsp;if&nbsp;the&nbsp;<a href="#EOF">EOF</a>&nbsp;exception&nbsp;was&nbsp;ever&nbsp;raised.</tt></dd></dl>

<dl><dt><a name="spawn-expect">expect</a>(self, pattern, timeout=-1, searchwindowsize=None)</dt><dd><tt>This&nbsp;seeks&nbsp;through&nbsp;the&nbsp;stream&nbsp;until&nbsp;a&nbsp;pattern&nbsp;is&nbsp;matched.&nbsp;The 
pattern&nbsp;is&nbsp;overloaded&nbsp;and&nbsp;may&nbsp;take&nbsp;several&nbsp;types.&nbsp;The&nbsp;pattern&nbsp;can&nbsp;be&nbsp;a 
StringType,&nbsp;<a href="#EOF">EOF</a>,&nbsp;a&nbsp;compiled&nbsp;re,&nbsp;or&nbsp;a&nbsp;list&nbsp;of&nbsp;any&nbsp;of&nbsp;those&nbsp;types. 
Strings&nbsp;will&nbsp;be&nbsp;compiled&nbsp;to&nbsp;re&nbsp;types.&nbsp;This&nbsp;returns&nbsp;the&nbsp;index&nbsp;into&nbsp;the 
pattern&nbsp;list.&nbsp;If&nbsp;the&nbsp;pattern&nbsp;was&nbsp;not&nbsp;a&nbsp;list&nbsp;this&nbsp;returns&nbsp;index&nbsp;0&nbsp;on&nbsp;a 
successful&nbsp;match.&nbsp;This&nbsp;may&nbsp;raise&nbsp;exceptions&nbsp;for&nbsp;<a href="#EOF">EOF</a>&nbsp;or&nbsp;<a href="#TIMEOUT">TIMEOUT</a>.&nbsp;To 
avoid&nbsp;the&nbsp;<a href="#EOF">EOF</a>&nbsp;or&nbsp;<a href="#TIMEOUT">TIMEOUT</a>&nbsp;exceptions&nbsp;add&nbsp;<a href="#EOF">EOF</a>&nbsp;or&nbsp;<a href="#TIMEOUT">TIMEOUT</a>&nbsp;to&nbsp;the&nbsp;pattern 
list.&nbsp;That&nbsp;will&nbsp;cause&nbsp;expect&nbsp;to&nbsp;match&nbsp;an&nbsp;<a href="#EOF">EOF</a>&nbsp;or&nbsp;<a href="#TIMEOUT">TIMEOUT</a>&nbsp;condition 
instead&nbsp;of&nbsp;raising&nbsp;an&nbsp;exception. 
&nbsp; 
If&nbsp;you&nbsp;pass&nbsp;a&nbsp;list&nbsp;of&nbsp;patterns&nbsp;and&nbsp;more&nbsp;than&nbsp;one&nbsp;matches,&nbsp;the&nbsp;first&nbsp;match 
in&nbsp;the&nbsp;stream&nbsp;is&nbsp;chosen.&nbsp;If&nbsp;more&nbsp;than&nbsp;one&nbsp;pattern&nbsp;matches&nbsp;at&nbsp;that&nbsp;point, 
the&nbsp;leftmost&nbsp;in&nbsp;the&nbsp;pattern&nbsp;list&nbsp;is&nbsp;chosen.&nbsp;For&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;#&nbsp;the&nbsp;input&nbsp;is&nbsp;'foobar' 
&nbsp;&nbsp;&nbsp;&nbsp;index&nbsp;=&nbsp;p.expect&nbsp;(['bar',&nbsp;'foo',&nbsp;'foobar']) 
&nbsp;&nbsp;&nbsp;&nbsp;#&nbsp;returns&nbsp;1&nbsp;('foo')&nbsp;even&nbsp;though&nbsp;'foobar'&nbsp;is&nbsp;a&nbsp;"better"&nbsp;match 
&nbsp; 
Please&nbsp;note,&nbsp;however,&nbsp;that&nbsp;buffering&nbsp;can&nbsp;affect&nbsp;this&nbsp;behavior,&nbsp;since 
input&nbsp;arrives&nbsp;in&nbsp;unpredictable&nbsp;chunks.&nbsp;For&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;#&nbsp;the&nbsp;input&nbsp;is&nbsp;'foobar' 
&nbsp;&nbsp;&nbsp;&nbsp;index&nbsp;=&nbsp;p.expect&nbsp;(['foobar',&nbsp;'foo']) 
&nbsp;&nbsp;&nbsp;&nbsp;#&nbsp;returns&nbsp;0&nbsp;('foobar')&nbsp;if&nbsp;all&nbsp;input&nbsp;is&nbsp;available&nbsp;at&nbsp;once, 
&nbsp;&nbsp;&nbsp;&nbsp;#&nbsp;but&nbsp;returs&nbsp;1&nbsp;('foo')&nbsp;if&nbsp;parts&nbsp;of&nbsp;the&nbsp;final&nbsp;'bar'&nbsp;arrive&nbsp;late 
&nbsp; 
After&nbsp;a&nbsp;match&nbsp;is&nbsp;found&nbsp;the&nbsp;instance&nbsp;attributes&nbsp;'before',&nbsp;'after'&nbsp;and 
'match'&nbsp;will&nbsp;be&nbsp;set.&nbsp;You&nbsp;can&nbsp;see&nbsp;all&nbsp;the&nbsp;data&nbsp;read&nbsp;before&nbsp;the&nbsp;match&nbsp;in 
'before'.&nbsp;You&nbsp;can&nbsp;see&nbsp;the&nbsp;data&nbsp;that&nbsp;was&nbsp;matched&nbsp;in&nbsp;'after'.&nbsp;The 
re.MatchObject&nbsp;used&nbsp;in&nbsp;the&nbsp;re&nbsp;match&nbsp;will&nbsp;be&nbsp;in&nbsp;'match'.&nbsp;If&nbsp;an&nbsp;error 
occurred&nbsp;then&nbsp;'before'&nbsp;will&nbsp;be&nbsp;set&nbsp;to&nbsp;all&nbsp;the&nbsp;data&nbsp;read&nbsp;so&nbsp;far&nbsp;and 
'after'&nbsp;and&nbsp;'match'&nbsp;will&nbsp;be&nbsp;None. 
&nbsp; 
If&nbsp;timeout&nbsp;is&nbsp;-1&nbsp;then&nbsp;timeout&nbsp;will&nbsp;be&nbsp;set&nbsp;to&nbsp;the&nbsp;self.timeout&nbsp;value. 
&nbsp; 
A&nbsp;list&nbsp;entry&nbsp;may&nbsp;be&nbsp;<a href="#EOF">EOF</a>&nbsp;or&nbsp;<a href="#TIMEOUT">TIMEOUT</a>&nbsp;instead&nbsp;of&nbsp;a&nbsp;string.&nbsp;This&nbsp;will 
catch&nbsp;these&nbsp;exceptions&nbsp;and&nbsp;return&nbsp;the&nbsp;index&nbsp;of&nbsp;the&nbsp;list&nbsp;entry&nbsp;instead 
of&nbsp;raising&nbsp;the&nbsp;exception.&nbsp;The&nbsp;attribute&nbsp;'after'&nbsp;will&nbsp;be&nbsp;set&nbsp;to&nbsp;the 
exception&nbsp;type.&nbsp;The&nbsp;attribute&nbsp;'match'&nbsp;will&nbsp;be&nbsp;None.&nbsp;This&nbsp;allows&nbsp;you&nbsp;to 
write&nbsp;code&nbsp;like&nbsp;this:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;index&nbsp;=&nbsp;p.expect&nbsp;(['good',&nbsp;'bad',&nbsp;pexpect.<a href="#EOF">EOF</a>,&nbsp;pexpect.<a href="#TIMEOUT">TIMEOUT</a>]) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;index&nbsp;==&nbsp;0: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;do_something() 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;elif&nbsp;index&nbsp;==&nbsp;1: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;do_something_else() 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;elif&nbsp;index&nbsp;==&nbsp;2: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;do_some_other_thing() 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;elif&nbsp;index&nbsp;==&nbsp;3: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;do_something_completely_different() 
&nbsp; 
instead&nbsp;of&nbsp;code&nbsp;like&nbsp;this:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;try: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;index&nbsp;=&nbsp;p.expect&nbsp;(['good',&nbsp;'bad']) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;index&nbsp;==&nbsp;0: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;do_something() 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;elif&nbsp;index&nbsp;==&nbsp;1: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;do_something_else() 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;except&nbsp;<a href="#EOF">EOF</a>: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;do_some_other_thing() 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;except&nbsp;<a href="#TIMEOUT">TIMEOUT</a>: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;do_something_completely_different() 
&nbsp; 
These&nbsp;two&nbsp;forms&nbsp;are&nbsp;equivalent.&nbsp;It&nbsp;all&nbsp;depends&nbsp;on&nbsp;what&nbsp;you&nbsp;want.&nbsp;You 
can&nbsp;also&nbsp;just&nbsp;expect&nbsp;the&nbsp;<a href="#EOF">EOF</a>&nbsp;if&nbsp;you&nbsp;are&nbsp;waiting&nbsp;for&nbsp;all&nbsp;output&nbsp;of&nbsp;a 
child&nbsp;to&nbsp;finish.&nbsp;For&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('/bin/ls') 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p.expect&nbsp;(pexpect.<a href="#EOF">EOF</a>) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print&nbsp;p.before 
&nbsp; 
If&nbsp;you&nbsp;are&nbsp;trying&nbsp;to&nbsp;optimize&nbsp;for&nbsp;speed&nbsp;then&nbsp;see&nbsp;<a href="#spawn-expect_list">expect_list</a>().</tt></dd></dl>

<dl><dt><a name="spawn-expect_exact">expect_exact</a>(self, pattern_list, timeout=-1, searchwindowsize=-1)</dt><dd><tt>This&nbsp;is&nbsp;similar&nbsp;to&nbsp;<a href="#spawn-expect">expect</a>(),&nbsp;but&nbsp;uses&nbsp;plain&nbsp;string&nbsp;matching&nbsp;instead 
of&nbsp;compiled&nbsp;regular&nbsp;expressions&nbsp;in&nbsp;'pattern_list'.&nbsp;The&nbsp;'pattern_list' 
may&nbsp;be&nbsp;a&nbsp;string;&nbsp;a&nbsp;list&nbsp;or&nbsp;other&nbsp;sequence&nbsp;of&nbsp;strings;&nbsp;or&nbsp;<a href="#TIMEOUT">TIMEOUT</a>&nbsp;and 
<a href="#EOF">EOF</a>. 
&nbsp; 
This&nbsp;call&nbsp;might&nbsp;be&nbsp;faster&nbsp;than&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;for&nbsp;two&nbsp;reasons:&nbsp;string 
searching&nbsp;is&nbsp;faster&nbsp;than&nbsp;RE&nbsp;matching&nbsp;and&nbsp;it&nbsp;is&nbsp;possible&nbsp;to&nbsp;limit&nbsp;the 
search&nbsp;to&nbsp;just&nbsp;the&nbsp;end&nbsp;of&nbsp;the&nbsp;input&nbsp;buffer. 
&nbsp; 
This&nbsp;method&nbsp;is&nbsp;also&nbsp;useful&nbsp;when&nbsp;you&nbsp;don't&nbsp;want&nbsp;to&nbsp;have&nbsp;to&nbsp;worry&nbsp;about 
escaping&nbsp;regular&nbsp;expression&nbsp;characters&nbsp;that&nbsp;you&nbsp;want&nbsp;to&nbsp;match.</tt></dd></dl>

<dl><dt><a name="spawn-expect_list">expect_list</a>(self, pattern_list, timeout=-1, searchwindowsize=-1)</dt><dd><tt>This&nbsp;takes&nbsp;a&nbsp;list&nbsp;of&nbsp;compiled&nbsp;regular&nbsp;expressions&nbsp;and&nbsp;returns&nbsp;the 
index&nbsp;into&nbsp;the&nbsp;pattern_list&nbsp;that&nbsp;matched&nbsp;the&nbsp;child&nbsp;output.&nbsp;The&nbsp;list&nbsp;may 
also&nbsp;contain&nbsp;<a href="#EOF">EOF</a>&nbsp;or&nbsp;<a href="#TIMEOUT">TIMEOUT</a>&nbsp;(which&nbsp;are&nbsp;not&nbsp;compiled&nbsp;regular 
expressions).&nbsp;This&nbsp;method&nbsp;is&nbsp;similar&nbsp;to&nbsp;the&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;method&nbsp;except&nbsp;that 
<a href="#spawn-expect_list">expect_list</a>()&nbsp;does&nbsp;not&nbsp;recompile&nbsp;the&nbsp;pattern&nbsp;list&nbsp;on&nbsp;every&nbsp;call.&nbsp;This 
may&nbsp;help&nbsp;if&nbsp;you&nbsp;are&nbsp;trying&nbsp;to&nbsp;optimize&nbsp;for&nbsp;speed,&nbsp;otherwise&nbsp;just&nbsp;use 
the&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;method.&nbsp;&nbsp;This&nbsp;is&nbsp;called&nbsp;by&nbsp;<a href="#spawn-expect">expect</a>().&nbsp;If&nbsp;timeout==-1&nbsp;then 
the&nbsp;self.timeout&nbsp;value&nbsp;is&nbsp;used.&nbsp;If&nbsp;searchwindowsize==-1&nbsp;then&nbsp;the 
self.searchwindowsize&nbsp;value&nbsp;is&nbsp;used.</tt></dd></dl>

<dl><dt><a name="spawn-expect_loop">expect_loop</a>(self, searcher, timeout=-1, searchwindowsize=-1)</dt><dd><tt>This&nbsp;is&nbsp;the&nbsp;common&nbsp;loop&nbsp;used&nbsp;inside&nbsp;expect.&nbsp;The&nbsp;'searcher'&nbsp;should&nbsp;be 
an&nbsp;instance&nbsp;of&nbsp;searcher_re&nbsp;or&nbsp;searcher_string,&nbsp;which&nbsp;describes&nbsp;how&nbsp;and&nbsp;what 
to&nbsp;search&nbsp;for&nbsp;in&nbsp;the&nbsp;input. 
&nbsp; 
See&nbsp;<a href="#spawn-expect">expect</a>()&nbsp;for&nbsp;other&nbsp;arguments,&nbsp;return&nbsp;value&nbsp;and&nbsp;exceptions.</tt></dd></dl>

<dl><dt><a name="spawn-fileno">fileno</a>(self)</dt><dd><tt>This&nbsp;returns&nbsp;the&nbsp;file&nbsp;descriptor&nbsp;of&nbsp;the&nbsp;pty&nbsp;for&nbsp;the&nbsp;child.</tt></dd></dl>

<dl><dt><a name="spawn-flush">flush</a>(self)</dt><dd><tt>This&nbsp;does&nbsp;nothing.&nbsp;It&nbsp;is&nbsp;here&nbsp;to&nbsp;support&nbsp;the&nbsp;interface&nbsp;for&nbsp;a 
File-like&nbsp;<a href="__builtin__.html#object">object</a>.</tt></dd></dl>

<dl><dt><a name="spawn-getecho">getecho</a>(self)</dt><dd><tt>This&nbsp;returns&nbsp;the&nbsp;terminal&nbsp;echo&nbsp;mode.&nbsp;This&nbsp;returns&nbsp;True&nbsp;if&nbsp;echo&nbsp;is 
on&nbsp;or&nbsp;False&nbsp;if&nbsp;echo&nbsp;is&nbsp;off.&nbsp;Child&nbsp;applications&nbsp;that&nbsp;are&nbsp;expecting&nbsp;you 
to&nbsp;enter&nbsp;a&nbsp;password&nbsp;often&nbsp;set&nbsp;ECHO&nbsp;False.&nbsp;See&nbsp;<a href="#spawn-waitnoecho">waitnoecho</a>().</tt></dd></dl>

<dl><dt><a name="spawn-getwinsize">getwinsize</a>(self)</dt><dd><tt>This&nbsp;returns&nbsp;the&nbsp;terminal&nbsp;window&nbsp;size&nbsp;of&nbsp;the&nbsp;child&nbsp;tty.&nbsp;The&nbsp;return 
value&nbsp;is&nbsp;a&nbsp;tuple&nbsp;of&nbsp;(rows,&nbsp;cols).</tt></dd></dl>

<dl><dt><a name="spawn-interact">interact</a>(self, escape_character='\x1d', input_filter=None, output_filter=None)</dt><dd><tt>This&nbsp;gives&nbsp;control&nbsp;of&nbsp;the&nbsp;child&nbsp;process&nbsp;to&nbsp;the&nbsp;interactive&nbsp;user&nbsp;(the 
human&nbsp;at&nbsp;the&nbsp;keyboard).&nbsp;Keystrokes&nbsp;are&nbsp;sent&nbsp;to&nbsp;the&nbsp;child&nbsp;process,&nbsp;and 
the&nbsp;stdout&nbsp;and&nbsp;stderr&nbsp;output&nbsp;of&nbsp;the&nbsp;child&nbsp;process&nbsp;is&nbsp;printed.&nbsp;This 
simply&nbsp;echos&nbsp;the&nbsp;child&nbsp;stdout&nbsp;and&nbsp;child&nbsp;stderr&nbsp;to&nbsp;the&nbsp;real&nbsp;stdout&nbsp;and 
it&nbsp;echos&nbsp;the&nbsp;real&nbsp;stdin&nbsp;to&nbsp;the&nbsp;child&nbsp;stdin.&nbsp;When&nbsp;the&nbsp;user&nbsp;types&nbsp;the 
escape_character&nbsp;this&nbsp;method&nbsp;will&nbsp;stop.&nbsp;The&nbsp;default&nbsp;for 
escape_character&nbsp;is&nbsp;^].&nbsp;This&nbsp;should&nbsp;not&nbsp;be&nbsp;confused&nbsp;with&nbsp;ASCII&nbsp;27&nbsp;-- 
the&nbsp;ESC&nbsp;character.&nbsp;ASCII&nbsp;29&nbsp;was&nbsp;chosen&nbsp;for&nbsp;historical&nbsp;merit&nbsp;because 
this&nbsp;is&nbsp;the&nbsp;character&nbsp;used&nbsp;by&nbsp;'telnet'&nbsp;as&nbsp;the&nbsp;escape&nbsp;character.&nbsp;The 
escape_character&nbsp;will&nbsp;not&nbsp;be&nbsp;sent&nbsp;to&nbsp;the&nbsp;child&nbsp;process. 
&nbsp; 
You&nbsp;may&nbsp;pass&nbsp;in&nbsp;optional&nbsp;input&nbsp;and&nbsp;output&nbsp;filter&nbsp;functions.&nbsp;These 
functions&nbsp;should&nbsp;take&nbsp;a&nbsp;string&nbsp;and&nbsp;return&nbsp;a&nbsp;string.&nbsp;The&nbsp;output_filter 
will&nbsp;be&nbsp;passed&nbsp;all&nbsp;the&nbsp;output&nbsp;from&nbsp;the&nbsp;child&nbsp;process.&nbsp;The&nbsp;input_filter 
will&nbsp;be&nbsp;passed&nbsp;all&nbsp;the&nbsp;keyboard&nbsp;input&nbsp;from&nbsp;the&nbsp;user.&nbsp;The&nbsp;input_filter 
is&nbsp;run&nbsp;BEFORE&nbsp;the&nbsp;check&nbsp;for&nbsp;the&nbsp;escape_character. 
&nbsp; 
Note&nbsp;that&nbsp;if&nbsp;you&nbsp;change&nbsp;the&nbsp;window&nbsp;size&nbsp;of&nbsp;the&nbsp;parent&nbsp;the&nbsp;SIGWINCH 
signal&nbsp;will&nbsp;not&nbsp;be&nbsp;passed&nbsp;through&nbsp;to&nbsp;the&nbsp;child.&nbsp;If&nbsp;you&nbsp;want&nbsp;the&nbsp;child 
window&nbsp;size&nbsp;to&nbsp;change&nbsp;when&nbsp;the&nbsp;parent's&nbsp;window&nbsp;size&nbsp;changes&nbsp;then&nbsp;do 
something&nbsp;like&nbsp;the&nbsp;following&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;import&nbsp;pexpect,&nbsp;struct,&nbsp;fcntl,&nbsp;termios,&nbsp;signal,&nbsp;sys 
&nbsp;&nbsp;&nbsp;&nbsp;def&nbsp;sigwinch_passthrough&nbsp;(sig,&nbsp;data): 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;s&nbsp;=&nbsp;struct.pack("HHHH",&nbsp;0,&nbsp;0,&nbsp;0,&nbsp;0) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a&nbsp;=&nbsp;struct.unpack('hhhh',&nbsp;fcntl.ioctl(sys.stdout.<a href="#spawn-fileno">fileno</a>(),&nbsp;termios.TIOCGWINSZ&nbsp;,&nbsp;s)) 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;global&nbsp;p 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p.<a href="#spawn-setwinsize">setwinsize</a>(a[0],a[1]) 
&nbsp;&nbsp;&nbsp;&nbsp;p&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('/bin/bash')&nbsp;#&nbsp;Note&nbsp;this&nbsp;is&nbsp;global&nbsp;and&nbsp;used&nbsp;in&nbsp;sigwinch_passthrough. 
&nbsp;&nbsp;&nbsp;&nbsp;signal.signal(signal.SIGWINCH,&nbsp;sigwinch_passthrough) 
&nbsp;&nbsp;&nbsp;&nbsp;p.<a href="#spawn-interact">interact</a>()</tt></dd></dl>

<dl><dt><a name="spawn-isalive">isalive</a>(self)</dt><dd><tt>This&nbsp;tests&nbsp;if&nbsp;the&nbsp;child&nbsp;process&nbsp;is&nbsp;running&nbsp;or&nbsp;not.&nbsp;This&nbsp;is 
non-blocking.&nbsp;If&nbsp;the&nbsp;child&nbsp;was&nbsp;terminated&nbsp;then&nbsp;this&nbsp;will&nbsp;read&nbsp;the 
exitstatus&nbsp;or&nbsp;signalstatus&nbsp;of&nbsp;the&nbsp;child.&nbsp;This&nbsp;returns&nbsp;True&nbsp;if&nbsp;the&nbsp;child 
process&nbsp;appears&nbsp;to&nbsp;be&nbsp;running&nbsp;or&nbsp;False&nbsp;if&nbsp;not.&nbsp;It&nbsp;can&nbsp;take&nbsp;literally 
SECONDS&nbsp;for&nbsp;Solaris&nbsp;to&nbsp;return&nbsp;the&nbsp;right&nbsp;status.</tt></dd></dl>

<dl><dt><a name="spawn-isatty">isatty</a>(self)</dt><dd><tt>This&nbsp;returns&nbsp;True&nbsp;if&nbsp;the&nbsp;file&nbsp;descriptor&nbsp;is&nbsp;open&nbsp;and&nbsp;connected&nbsp;to&nbsp;a 
tty(-like)&nbsp;device,&nbsp;else&nbsp;False.</tt></dd></dl>

<dl><dt><a name="spawn-kill">kill</a>(self, sig)</dt><dd><tt>This&nbsp;sends&nbsp;the&nbsp;given&nbsp;signal&nbsp;to&nbsp;the&nbsp;child&nbsp;application.&nbsp;In&nbsp;keeping 
with&nbsp;UNIX&nbsp;tradition&nbsp;it&nbsp;has&nbsp;a&nbsp;misleading&nbsp;name.&nbsp;It&nbsp;does&nbsp;not&nbsp;necessarily 
kill&nbsp;the&nbsp;child&nbsp;unless&nbsp;you&nbsp;send&nbsp;the&nbsp;right&nbsp;signal.</tt></dd></dl>

<dl><dt><a name="spawn-next">next</a>(self)</dt><dd><tt>This&nbsp;is&nbsp;to&nbsp;support&nbsp;iterators&nbsp;over&nbsp;a&nbsp;file-like&nbsp;<a href="__builtin__.html#object">object</a>.</tt></dd></dl>

<dl><dt><a name="spawn-read">read</a>(self, size=-1)</dt><dd><tt>This&nbsp;reads&nbsp;at&nbsp;most&nbsp;"size"&nbsp;bytes&nbsp;from&nbsp;the&nbsp;file&nbsp;(less&nbsp;if&nbsp;the&nbsp;read&nbsp;hits 
<a href="#EOF">EOF</a>&nbsp;before&nbsp;obtaining&nbsp;size&nbsp;bytes).&nbsp;If&nbsp;the&nbsp;size&nbsp;argument&nbsp;is&nbsp;negative&nbsp;or 
omitted,&nbsp;read&nbsp;all&nbsp;data&nbsp;until&nbsp;<a href="#EOF">EOF</a>&nbsp;is&nbsp;reached.&nbsp;The&nbsp;bytes&nbsp;are&nbsp;returned&nbsp;as 
a&nbsp;string&nbsp;<a href="__builtin__.html#object">object</a>.&nbsp;An&nbsp;empty&nbsp;string&nbsp;is&nbsp;returned&nbsp;when&nbsp;<a href="#EOF">EOF</a>&nbsp;is&nbsp;encountered 
immediately.</tt></dd></dl>

<dl><dt><a name="spawn-read_nonblocking">read_nonblocking</a>(self, size=1, timeout=-1)</dt><dd><tt>This&nbsp;reads&nbsp;at&nbsp;most&nbsp;size&nbsp;characters&nbsp;from&nbsp;the&nbsp;child&nbsp;application.&nbsp;It 
includes&nbsp;a&nbsp;timeout.&nbsp;If&nbsp;the&nbsp;read&nbsp;does&nbsp;not&nbsp;complete&nbsp;within&nbsp;the&nbsp;timeout 
period&nbsp;then&nbsp;a&nbsp;<a href="#TIMEOUT">TIMEOUT</a>&nbsp;exception&nbsp;is&nbsp;raised.&nbsp;If&nbsp;the&nbsp;end&nbsp;of&nbsp;file&nbsp;is&nbsp;read 
then&nbsp;an&nbsp;<a href="#EOF">EOF</a>&nbsp;exception&nbsp;will&nbsp;be&nbsp;raised.&nbsp;If&nbsp;a&nbsp;log&nbsp;file&nbsp;was&nbsp;set&nbsp;using 
<a href="#spawn-setlog">setlog</a>()&nbsp;then&nbsp;all&nbsp;data&nbsp;will&nbsp;also&nbsp;be&nbsp;written&nbsp;to&nbsp;the&nbsp;log&nbsp;file. 
&nbsp; 
If&nbsp;timeout&nbsp;is&nbsp;None&nbsp;then&nbsp;the&nbsp;read&nbsp;may&nbsp;block&nbsp;indefinitely.&nbsp;If&nbsp;timeout&nbsp;is&nbsp;-1 
then&nbsp;the&nbsp;self.timeout&nbsp;value&nbsp;is&nbsp;used.&nbsp;If&nbsp;timeout&nbsp;is&nbsp;0&nbsp;then&nbsp;the&nbsp;child&nbsp;is 
polled&nbsp;and&nbsp;if&nbsp;there&nbsp;was&nbsp;no&nbsp;data&nbsp;immediately&nbsp;ready&nbsp;then&nbsp;this&nbsp;will&nbsp;raise 
a&nbsp;<a href="#TIMEOUT">TIMEOUT</a>&nbsp;exception. 
&nbsp; 
The&nbsp;timeout&nbsp;refers&nbsp;only&nbsp;to&nbsp;the&nbsp;amount&nbsp;of&nbsp;time&nbsp;to&nbsp;read&nbsp;at&nbsp;least&nbsp;one 
character.&nbsp;This&nbsp;is&nbsp;not&nbsp;effected&nbsp;by&nbsp;the&nbsp;'size'&nbsp;parameter,&nbsp;so&nbsp;if&nbsp;you&nbsp;call 
<a href="#spawn-read_nonblocking">read_nonblocking</a>(size=100,&nbsp;timeout=30)&nbsp;and&nbsp;only&nbsp;one&nbsp;character&nbsp;is 
available&nbsp;right&nbsp;away&nbsp;then&nbsp;one&nbsp;character&nbsp;will&nbsp;be&nbsp;returned&nbsp;immediately. 
It&nbsp;will&nbsp;not&nbsp;wait&nbsp;for&nbsp;30&nbsp;seconds&nbsp;for&nbsp;another&nbsp;99&nbsp;characters&nbsp;to&nbsp;come&nbsp;in. 
&nbsp; 
This&nbsp;is&nbsp;a&nbsp;wrapper&nbsp;around&nbsp;os.<a href="#spawn-read">read</a>().&nbsp;It&nbsp;uses&nbsp;select.select()&nbsp;to 
implement&nbsp;the&nbsp;timeout.</tt></dd></dl>

<dl><dt><a name="spawn-readline">readline</a>(self, size=-1)</dt><dd><tt>This&nbsp;reads&nbsp;and&nbsp;returns&nbsp;one&nbsp;entire&nbsp;line.&nbsp;A&nbsp;trailing&nbsp;newline&nbsp;is&nbsp;kept 
in&nbsp;the&nbsp;string,&nbsp;but&nbsp;may&nbsp;be&nbsp;absent&nbsp;when&nbsp;a&nbsp;file&nbsp;ends&nbsp;with&nbsp;an&nbsp;incomplete 
line.&nbsp;Note:&nbsp;This&nbsp;<a href="#spawn-readline">readline</a>()&nbsp;looks&nbsp;for&nbsp;a&nbsp;\r\n&nbsp;pair&nbsp;even&nbsp;on&nbsp;UNIX 
because&nbsp;this&nbsp;is&nbsp;what&nbsp;the&nbsp;pseudo&nbsp;tty&nbsp;device&nbsp;returns.&nbsp;So&nbsp;contrary&nbsp;to&nbsp;what 
you&nbsp;may&nbsp;expect&nbsp;you&nbsp;will&nbsp;receive&nbsp;the&nbsp;newline&nbsp;as&nbsp;\r\n.&nbsp;An&nbsp;empty&nbsp;string 
is&nbsp;returned&nbsp;when&nbsp;<a href="#EOF">EOF</a>&nbsp;is&nbsp;hit&nbsp;immediately.&nbsp;Currently,&nbsp;the&nbsp;size&nbsp;argument&nbsp;is 
mostly&nbsp;ignored,&nbsp;so&nbsp;this&nbsp;behavior&nbsp;is&nbsp;not&nbsp;standard&nbsp;for&nbsp;a&nbsp;file-like 
<a href="__builtin__.html#object">object</a>.&nbsp;If&nbsp;size&nbsp;is&nbsp;0&nbsp;then&nbsp;an&nbsp;empty&nbsp;string&nbsp;is&nbsp;returned.</tt></dd></dl>

<dl><dt><a name="spawn-readlines">readlines</a>(self, sizehint=-1)</dt><dd><tt>This&nbsp;reads&nbsp;until&nbsp;<a href="#EOF">EOF</a>&nbsp;using&nbsp;<a href="#spawn-readline">readline</a>()&nbsp;and&nbsp;returns&nbsp;a&nbsp;list&nbsp;containing 
the&nbsp;lines&nbsp;thus&nbsp;read.&nbsp;The&nbsp;optional&nbsp;"sizehint"&nbsp;argument&nbsp;is&nbsp;ignored.</tt></dd></dl>

<dl><dt><a name="spawn-send">send</a>(self, s)</dt><dd><tt>This&nbsp;sends&nbsp;a&nbsp;string&nbsp;to&nbsp;the&nbsp;child&nbsp;process.&nbsp;This&nbsp;returns&nbsp;the&nbsp;number&nbsp;of 
bytes&nbsp;written.&nbsp;If&nbsp;a&nbsp;log&nbsp;file&nbsp;was&nbsp;set&nbsp;then&nbsp;the&nbsp;data&nbsp;is&nbsp;also&nbsp;written&nbsp;to 
the&nbsp;log.</tt></dd></dl>

<dl><dt><a name="spawn-sendcontrol">sendcontrol</a>(self, char)</dt><dd><tt>This&nbsp;sends&nbsp;a&nbsp;control&nbsp;character&nbsp;to&nbsp;the&nbsp;child&nbsp;such&nbsp;as&nbsp;Ctrl-C&nbsp;or 
Ctrl-D.&nbsp;For&nbsp;example,&nbsp;to&nbsp;send&nbsp;a&nbsp;Ctrl-G&nbsp;(ASCII&nbsp;7):: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;child.<a href="#spawn-sendcontrol">sendcontrol</a>('g') 
&nbsp; 
See&nbsp;also,&nbsp;<a href="#spawn-sendintr">sendintr</a>()&nbsp;and&nbsp;<a href="#spawn-sendeof">sendeof</a>().</tt></dd></dl>

<dl><dt><a name="spawn-sendeof">sendeof</a>(self)</dt><dd><tt>This&nbsp;sends&nbsp;an&nbsp;<a href="#EOF">EOF</a>&nbsp;to&nbsp;the&nbsp;child.&nbsp;This&nbsp;sends&nbsp;a&nbsp;character&nbsp;which&nbsp;causes 
the&nbsp;pending&nbsp;parent&nbsp;output&nbsp;buffer&nbsp;to&nbsp;be&nbsp;sent&nbsp;to&nbsp;the&nbsp;waiting&nbsp;child 
program&nbsp;without&nbsp;waiting&nbsp;for&nbsp;end-of-line.&nbsp;If&nbsp;it&nbsp;is&nbsp;the&nbsp;first&nbsp;character 
of&nbsp;the&nbsp;line,&nbsp;the&nbsp;<a href="#spawn-read">read</a>()&nbsp;in&nbsp;the&nbsp;user&nbsp;program&nbsp;returns&nbsp;0,&nbsp;which&nbsp;signifies 
end-of-file.&nbsp;This&nbsp;means&nbsp;to&nbsp;work&nbsp;as&nbsp;expected&nbsp;a&nbsp;<a href="#spawn-sendeof">sendeof</a>()&nbsp;has&nbsp;to&nbsp;be 
called&nbsp;at&nbsp;the&nbsp;beginning&nbsp;of&nbsp;a&nbsp;line.&nbsp;This&nbsp;method&nbsp;does&nbsp;not&nbsp;send&nbsp;a&nbsp;newline. 
It&nbsp;is&nbsp;the&nbsp;responsibility&nbsp;of&nbsp;the&nbsp;caller&nbsp;to&nbsp;ensure&nbsp;the&nbsp;eof&nbsp;is&nbsp;sent&nbsp;at&nbsp;the 
beginning&nbsp;of&nbsp;a&nbsp;line.</tt></dd></dl>

<dl><dt><a name="spawn-sendintr">sendintr</a>(self)</dt><dd><tt>This&nbsp;sends&nbsp;a&nbsp;SIGINT&nbsp;to&nbsp;the&nbsp;child.&nbsp;It&nbsp;does&nbsp;not&nbsp;require 
the&nbsp;SIGINT&nbsp;to&nbsp;be&nbsp;the&nbsp;first&nbsp;character&nbsp;on&nbsp;a&nbsp;line.</tt></dd></dl>

<dl><dt><a name="spawn-sendline">sendline</a>(self, s='')</dt><dd><tt>This&nbsp;is&nbsp;like&nbsp;<a href="#spawn-send">send</a>(),&nbsp;but&nbsp;it&nbsp;adds&nbsp;a&nbsp;line&nbsp;feed&nbsp;(os.linesep).&nbsp;This 
returns&nbsp;the&nbsp;number&nbsp;of&nbsp;bytes&nbsp;written.</tt></dd></dl>

<dl><dt><a name="spawn-setecho">setecho</a>(self, state)</dt><dd><tt>This&nbsp;sets&nbsp;the&nbsp;terminal&nbsp;echo&nbsp;mode&nbsp;on&nbsp;or&nbsp;off.&nbsp;Note&nbsp;that&nbsp;anything&nbsp;the 
child&nbsp;sent&nbsp;before&nbsp;the&nbsp;echo&nbsp;will&nbsp;be&nbsp;lost,&nbsp;so&nbsp;you&nbsp;should&nbsp;be&nbsp;sure&nbsp;that 
your&nbsp;input&nbsp;buffer&nbsp;is&nbsp;empty&nbsp;before&nbsp;you&nbsp;call&nbsp;<a href="#spawn-setecho">setecho</a>().&nbsp;For&nbsp;example,&nbsp;the 
following&nbsp;will&nbsp;work&nbsp;as&nbsp;expected:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;p&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('cat') 
&nbsp;&nbsp;&nbsp;&nbsp;p.sendline&nbsp;('1234')&nbsp;#&nbsp;We&nbsp;will&nbsp;see&nbsp;this&nbsp;twice&nbsp;(once&nbsp;from&nbsp;tty&nbsp;echo&nbsp;and&nbsp;again&nbsp;from&nbsp;cat). 
&nbsp;&nbsp;&nbsp;&nbsp;p.expect&nbsp;(['1234']) 
&nbsp;&nbsp;&nbsp;&nbsp;p.expect&nbsp;(['1234']) 
&nbsp;&nbsp;&nbsp;&nbsp;p.<a href="#spawn-setecho">setecho</a>(False)&nbsp;#&nbsp;Turn&nbsp;off&nbsp;tty&nbsp;echo 
&nbsp;&nbsp;&nbsp;&nbsp;p.sendline&nbsp;('abcd')&nbsp;#&nbsp;We&nbsp;will&nbsp;set&nbsp;this&nbsp;only&nbsp;once&nbsp;(echoed&nbsp;by&nbsp;cat). 
&nbsp;&nbsp;&nbsp;&nbsp;p.sendline&nbsp;('wxyz')&nbsp;#&nbsp;We&nbsp;will&nbsp;set&nbsp;this&nbsp;only&nbsp;once&nbsp;(echoed&nbsp;by&nbsp;cat) 
&nbsp;&nbsp;&nbsp;&nbsp;p.expect&nbsp;(['abcd']) 
&nbsp;&nbsp;&nbsp;&nbsp;p.expect&nbsp;(['wxyz']) 
&nbsp; 
The&nbsp;following&nbsp;WILL&nbsp;NOT&nbsp;WORK&nbsp;because&nbsp;the&nbsp;lines&nbsp;sent&nbsp;before&nbsp;the&nbsp;setecho 
will&nbsp;be&nbsp;lost:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;p&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>('cat') 
&nbsp;&nbsp;&nbsp;&nbsp;p.sendline&nbsp;('1234')&nbsp;#&nbsp;We&nbsp;will&nbsp;see&nbsp;this&nbsp;twice&nbsp;(once&nbsp;from&nbsp;tty&nbsp;echo&nbsp;and&nbsp;again&nbsp;from&nbsp;cat). 
&nbsp;&nbsp;&nbsp;&nbsp;p.<a href="#spawn-setecho">setecho</a>(False)&nbsp;#&nbsp;Turn&nbsp;off&nbsp;tty&nbsp;echo 
&nbsp;&nbsp;&nbsp;&nbsp;p.sendline&nbsp;('abcd')&nbsp;#&nbsp;We&nbsp;will&nbsp;set&nbsp;this&nbsp;only&nbsp;once&nbsp;(echoed&nbsp;by&nbsp;cat). 
&nbsp;&nbsp;&nbsp;&nbsp;p.sendline&nbsp;('wxyz')&nbsp;#&nbsp;We&nbsp;will&nbsp;set&nbsp;this&nbsp;only&nbsp;once&nbsp;(echoed&nbsp;by&nbsp;cat) 
&nbsp;&nbsp;&nbsp;&nbsp;p.expect&nbsp;(['1234']) 
&nbsp;&nbsp;&nbsp;&nbsp;p.expect&nbsp;(['1234']) 
&nbsp;&nbsp;&nbsp;&nbsp;p.expect&nbsp;(['abcd']) 
&nbsp;&nbsp;&nbsp;&nbsp;p.expect&nbsp;(['wxyz'])</tt></dd></dl>

<dl><dt><a name="spawn-setlog">setlog</a>(self, fileobject)</dt><dd><tt>This&nbsp;method&nbsp;is&nbsp;no&nbsp;longer&nbsp;supported&nbsp;or&nbsp;allowed.</tt></dd></dl>

<dl><dt><a name="spawn-setmaxread">setmaxread</a>(self, maxread)</dt><dd><tt>This&nbsp;method&nbsp;is&nbsp;no&nbsp;longer&nbsp;supported&nbsp;or&nbsp;allowed.&nbsp;I&nbsp;don't&nbsp;like&nbsp;getters 
and&nbsp;setters&nbsp;without&nbsp;a&nbsp;good&nbsp;reason.</tt></dd></dl>

<dl><dt><a name="spawn-setwinsize">setwinsize</a>(self, r, c)</dt><dd><tt>This&nbsp;sets&nbsp;the&nbsp;terminal&nbsp;window&nbsp;size&nbsp;of&nbsp;the&nbsp;child&nbsp;tty.&nbsp;This&nbsp;will&nbsp;cause 
a&nbsp;SIGWINCH&nbsp;signal&nbsp;to&nbsp;be&nbsp;sent&nbsp;to&nbsp;the&nbsp;child.&nbsp;This&nbsp;does&nbsp;not&nbsp;change&nbsp;the 
physical&nbsp;window&nbsp;size.&nbsp;It&nbsp;changes&nbsp;the&nbsp;size&nbsp;reported&nbsp;to&nbsp;TTY-aware 
applications&nbsp;like&nbsp;vi&nbsp;or&nbsp;curses&nbsp;--&nbsp;applications&nbsp;that&nbsp;respond&nbsp;to&nbsp;the 
SIGWINCH&nbsp;signal.</tt></dd></dl>

<dl><dt><a name="spawn-terminate">terminate</a>(self, force=False)</dt><dd><tt>This&nbsp;forces&nbsp;a&nbsp;child&nbsp;process&nbsp;to&nbsp;terminate.&nbsp;It&nbsp;starts&nbsp;nicely&nbsp;with 
SIGHUP&nbsp;and&nbsp;SIGINT.&nbsp;If&nbsp;"force"&nbsp;is&nbsp;True&nbsp;then&nbsp;moves&nbsp;onto&nbsp;SIGKILL.&nbsp;This 
returns&nbsp;True&nbsp;if&nbsp;the&nbsp;child&nbsp;was&nbsp;terminated.&nbsp;This&nbsp;returns&nbsp;False&nbsp;if&nbsp;the 
child&nbsp;could&nbsp;not&nbsp;be&nbsp;terminated.</tt></dd></dl>

<dl><dt><a name="spawn-wait">wait</a>(self)</dt><dd><tt>This&nbsp;waits&nbsp;until&nbsp;the&nbsp;child&nbsp;exits.&nbsp;This&nbsp;is&nbsp;a&nbsp;blocking&nbsp;call.&nbsp;This&nbsp;will 
not&nbsp;read&nbsp;any&nbsp;data&nbsp;from&nbsp;the&nbsp;child,&nbsp;so&nbsp;this&nbsp;will&nbsp;block&nbsp;forever&nbsp;if&nbsp;the 
child&nbsp;has&nbsp;unread&nbsp;output&nbsp;and&nbsp;has&nbsp;terminated.&nbsp;In&nbsp;other&nbsp;words,&nbsp;the&nbsp;child 
may&nbsp;have&nbsp;printed&nbsp;output&nbsp;then&nbsp;called&nbsp;exit();&nbsp;but,&nbsp;technically,&nbsp;the&nbsp;child 
is&nbsp;still&nbsp;alive&nbsp;until&nbsp;its&nbsp;output&nbsp;is&nbsp;read.</tt></dd></dl>

<dl><dt><a name="spawn-waitnoecho">waitnoecho</a>(self, timeout=-1)</dt><dd><tt>This&nbsp;waits&nbsp;until&nbsp;the&nbsp;terminal&nbsp;ECHO&nbsp;flag&nbsp;is&nbsp;set&nbsp;False.&nbsp;This&nbsp;returns 
True&nbsp;if&nbsp;the&nbsp;echo&nbsp;mode&nbsp;is&nbsp;off.&nbsp;This&nbsp;returns&nbsp;False&nbsp;if&nbsp;the&nbsp;ECHO&nbsp;flag&nbsp;was 
not&nbsp;set&nbsp;False&nbsp;before&nbsp;the&nbsp;timeout.&nbsp;This&nbsp;can&nbsp;be&nbsp;used&nbsp;to&nbsp;detect&nbsp;when&nbsp;the 
child&nbsp;is&nbsp;waiting&nbsp;for&nbsp;a&nbsp;password.&nbsp;Usually&nbsp;a&nbsp;child&nbsp;application&nbsp;will&nbsp;turn 
off&nbsp;echo&nbsp;mode&nbsp;when&nbsp;it&nbsp;is&nbsp;waiting&nbsp;for&nbsp;the&nbsp;user&nbsp;to&nbsp;enter&nbsp;a&nbsp;password.&nbsp;For 
example,&nbsp;instead&nbsp;of&nbsp;expecting&nbsp;the&nbsp;"password:"&nbsp;prompt&nbsp;you&nbsp;can&nbsp;wait&nbsp;for 
the&nbsp;child&nbsp;to&nbsp;set&nbsp;ECHO&nbsp;off:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;p&nbsp;=&nbsp;pexpect.<a href="#spawn">spawn</a>&nbsp;('ssh&nbsp;user@example.com') 
&nbsp;&nbsp;&nbsp;&nbsp;p.<a href="#spawn-waitnoecho">waitnoecho</a>() 
&nbsp;&nbsp;&nbsp;&nbsp;p.<a href="#spawn-sendline">sendline</a>(mypassword) 
&nbsp; 
If&nbsp;timeout&nbsp;is&nbsp;None&nbsp;then&nbsp;this&nbsp;method&nbsp;to&nbsp;block&nbsp;forever&nbsp;until&nbsp;ECHO&nbsp;flag&nbsp;is 
False.</tt></dd></dl>

<dl><dt><a name="spawn-write">write</a>(self, s)</dt><dd><tt>This&nbsp;is&nbsp;similar&nbsp;to&nbsp;<a href="#spawn-send">send</a>()&nbsp;except&nbsp;that&nbsp;there&nbsp;is&nbsp;no&nbsp;return&nbsp;value.</tt></dd></dl>

<dl><dt><a name="spawn-writelines">writelines</a>(self, sequence)</dt><dd><tt>This&nbsp;calls&nbsp;<a href="#spawn-write">write</a>()&nbsp;for&nbsp;each&nbsp;element&nbsp;in&nbsp;the&nbsp;sequence.&nbsp;The&nbsp;sequence 
can&nbsp;be&nbsp;any&nbsp;iterable&nbsp;<a href="__builtin__.html#object">object</a>&nbsp;producing&nbsp;strings,&nbsp;typically&nbsp;a&nbsp;list&nbsp;of 
strings.&nbsp;This&nbsp;does&nbsp;not&nbsp;add&nbsp;line&nbsp;separators&nbsp;There&nbsp;is&nbsp;no&nbsp;return&nbsp;value.</tt></dd></dl>

<hr>
Data descriptors defined here: 
<dl><dt>__dict__</dt>
<dd><tt>dictionary&nbsp;for&nbsp;instance&nbsp;variables&nbsp;(if&nbsp;defined)</tt></dd>
</dl>
<dl><dt>__weakref__</dt>
<dd><tt>list&nbsp;of&nbsp;weak&nbsp;references&nbsp;to&nbsp;the&nbsp;object&nbsp;(if&nbsp;defined)</tt></dd>
</dl>
</td></tr></table></td></tr></table>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#eeaa77">
<td colspan=3 valign=bottom>&nbsp; 
<big>Functions</big></td></tr>
 
<tr><td bgcolor="#eeaa77"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><dl><dt><a name="-run">run</a>(command, timeout=-1, withexitstatus=False, events=None, extra_args=None, logfile=None, cwd=None, env=None)</dt><dd><tt>This&nbsp;function&nbsp;runs&nbsp;the&nbsp;given&nbsp;command;&nbsp;waits&nbsp;for&nbsp;it&nbsp;to&nbsp;finish;&nbsp;then 
returns&nbsp;all&nbsp;output&nbsp;as&nbsp;a&nbsp;string.&nbsp;STDERR&nbsp;is&nbsp;included&nbsp;in&nbsp;output.&nbsp;If&nbsp;the&nbsp;full 
path&nbsp;to&nbsp;the&nbsp;command&nbsp;is&nbsp;not&nbsp;given&nbsp;then&nbsp;the&nbsp;path&nbsp;is&nbsp;searched. 
&nbsp; 
Note&nbsp;that&nbsp;lines&nbsp;are&nbsp;terminated&nbsp;by&nbsp;CR/LF&nbsp;(\r\n)&nbsp;combination&nbsp;even&nbsp;on 
UNIX-like&nbsp;systems&nbsp;because&nbsp;this&nbsp;is&nbsp;the&nbsp;standard&nbsp;for&nbsp;pseudo&nbsp;ttys.&nbsp;If&nbsp;you&nbsp;set 
'withexitstatus'&nbsp;to&nbsp;true,&nbsp;then&nbsp;run&nbsp;will&nbsp;return&nbsp;a&nbsp;tuple&nbsp;of&nbsp;(command_output, 
exitstatus).&nbsp;If&nbsp;'withexitstatus'&nbsp;is&nbsp;false&nbsp;then&nbsp;this&nbsp;returns&nbsp;just 
command_output. 
&nbsp; 
The&nbsp;<a href="#-run">run</a>()&nbsp;function&nbsp;can&nbsp;often&nbsp;be&nbsp;used&nbsp;instead&nbsp;of&nbsp;creating&nbsp;a&nbsp;<a href="#spawn">spawn</a>&nbsp;instance. 
For&nbsp;example,&nbsp;the&nbsp;following&nbsp;code&nbsp;uses&nbsp;<a href="#spawn">spawn</a>:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;from&nbsp;pexpect&nbsp;import&nbsp;* 
&nbsp;&nbsp;&nbsp;&nbsp;child&nbsp;=&nbsp;<a href="#spawn">spawn</a>('scp&nbsp;foo&nbsp;myname@host.example.com:.') 
&nbsp;&nbsp;&nbsp;&nbsp;child.expect&nbsp;('(?i)password') 
&nbsp;&nbsp;&nbsp;&nbsp;child.sendline&nbsp;(mypassword) 
&nbsp; 
The&nbsp;previous&nbsp;code&nbsp;can&nbsp;be&nbsp;replace&nbsp;with&nbsp;the&nbsp;following:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;from&nbsp;pexpect&nbsp;import&nbsp;* 
&nbsp;&nbsp;&nbsp;&nbsp;run&nbsp;('scp&nbsp;foo&nbsp;myname@host.example.com:.',&nbsp;events={'(?i)password':&nbsp;mypassword}) 
&nbsp; 
Examples 
======== 
&nbsp; 
Start&nbsp;the&nbsp;apache&nbsp;daemon&nbsp;on&nbsp;the&nbsp;local&nbsp;machine:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;from&nbsp;pexpect&nbsp;import&nbsp;* 
&nbsp;&nbsp;&nbsp;&nbsp;run&nbsp;("/usr/local/apache/bin/apachectl&nbsp;start") 
&nbsp; 
Check&nbsp;in&nbsp;a&nbsp;file&nbsp;using&nbsp;SVN:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;from&nbsp;pexpect&nbsp;import&nbsp;* 
&nbsp;&nbsp;&nbsp;&nbsp;run&nbsp;("svn&nbsp;ci&nbsp;-m&nbsp;'automatic&nbsp;commit'&nbsp;my_file.py") 
&nbsp; 
Run&nbsp;a&nbsp;command&nbsp;and&nbsp;capture&nbsp;exit&nbsp;status:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;from&nbsp;pexpect&nbsp;import&nbsp;* 
&nbsp;&nbsp;&nbsp;&nbsp;(command_output,&nbsp;exitstatus)&nbsp;=&nbsp;run&nbsp;('ls&nbsp;-l&nbsp;/bin',&nbsp;withexitstatus=1) 
&nbsp; 
Tricky&nbsp;Examples 
=============== 
&nbsp; 
The&nbsp;following&nbsp;will&nbsp;run&nbsp;SSH&nbsp;and&nbsp;execute&nbsp;'ls&nbsp;-l'&nbsp;on&nbsp;the&nbsp;remote&nbsp;machine.&nbsp;The 
password&nbsp;'secret'&nbsp;will&nbsp;be&nbsp;sent&nbsp;if&nbsp;the&nbsp;'(?i)password'&nbsp;pattern&nbsp;is&nbsp;ever&nbsp;seen:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;run&nbsp;("ssh&nbsp;username@machine.example.com&nbsp;'ls&nbsp;-l'",&nbsp;events={'(?i)password':'secret\n'}) 
&nbsp; 
This&nbsp;will&nbsp;start&nbsp;mencoder&nbsp;to&nbsp;rip&nbsp;a&nbsp;video&nbsp;from&nbsp;DVD.&nbsp;This&nbsp;will&nbsp;also&nbsp;display 
progress&nbsp;ticks&nbsp;every&nbsp;5&nbsp;seconds&nbsp;as&nbsp;it&nbsp;runs.&nbsp;For&nbsp;example:: 
&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp;from&nbsp;pexpect&nbsp;import&nbsp;* 
&nbsp;&nbsp;&nbsp;&nbsp;def&nbsp;print_ticks(d): 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print&nbsp;d['event_count'], 
&nbsp;&nbsp;&nbsp;&nbsp;run&nbsp;("mencoder&nbsp;dvd://1&nbsp;-o&nbsp;video.avi&nbsp;-oac&nbsp;copy&nbsp;-ovc&nbsp;copy",&nbsp;events={<a href="#TIMEOUT">TIMEOUT</a>:print_ticks},&nbsp;timeout=5) 
&nbsp; 
The&nbsp;'events'&nbsp;argument&nbsp;should&nbsp;be&nbsp;a&nbsp;dictionary&nbsp;of&nbsp;patterns&nbsp;and&nbsp;responses. 
Whenever&nbsp;one&nbsp;of&nbsp;the&nbsp;patterns&nbsp;is&nbsp;seen&nbsp;in&nbsp;the&nbsp;command&nbsp;out&nbsp;<a href="#-run">run</a>()&nbsp;will&nbsp;send&nbsp;the 
associated&nbsp;response&nbsp;string.&nbsp;Note&nbsp;that&nbsp;you&nbsp;should&nbsp;put&nbsp;newlines&nbsp;in&nbsp;your 
string&nbsp;if&nbsp;Enter&nbsp;is&nbsp;necessary.&nbsp;The&nbsp;responses&nbsp;may&nbsp;also&nbsp;contain&nbsp;callback 
functions.&nbsp;Any&nbsp;callback&nbsp;is&nbsp;function&nbsp;that&nbsp;takes&nbsp;a&nbsp;dictionary&nbsp;as&nbsp;an&nbsp;argument. 
The&nbsp;dictionary&nbsp;contains&nbsp;all&nbsp;the&nbsp;locals&nbsp;from&nbsp;the&nbsp;<a href="#-run">run</a>()&nbsp;function,&nbsp;so&nbsp;you&nbsp;can 
access&nbsp;the&nbsp;child&nbsp;<a href="#spawn">spawn</a>&nbsp;<a href="__builtin__.html#object">object</a>&nbsp;or&nbsp;any&nbsp;other&nbsp;variable&nbsp;defined&nbsp;in&nbsp;<a href="#-run">run</a>() 
(event_count,&nbsp;child,&nbsp;and&nbsp;extra_args&nbsp;are&nbsp;the&nbsp;most&nbsp;useful).&nbsp;A&nbsp;callback&nbsp;may 
return&nbsp;True&nbsp;to&nbsp;stop&nbsp;the&nbsp;current&nbsp;run&nbsp;process&nbsp;otherwise&nbsp;<a href="#-run">run</a>()&nbsp;continues&nbsp;until 
the&nbsp;next&nbsp;event.&nbsp;A&nbsp;callback&nbsp;may&nbsp;also&nbsp;return&nbsp;a&nbsp;string&nbsp;which&nbsp;will&nbsp;be&nbsp;sent&nbsp;to 
the&nbsp;child.&nbsp;'extra_args'&nbsp;is&nbsp;not&nbsp;used&nbsp;by&nbsp;directly&nbsp;<a href="#-run">run</a>().&nbsp;It&nbsp;provides&nbsp;a&nbsp;way&nbsp;to 
pass&nbsp;data&nbsp;to&nbsp;a&nbsp;callback&nbsp;function&nbsp;through&nbsp;<a href="#-run">run</a>()&nbsp;through&nbsp;the&nbsp;locals 
dictionary&nbsp;passed&nbsp;to&nbsp;a&nbsp;callback.</tt></dd></dl>
 <dl><dt><a name="-split_command_line">split_command_line</a>(command_line)</dt><dd><tt>This&nbsp;splits&nbsp;a&nbsp;command&nbsp;line&nbsp;into&nbsp;a&nbsp;list&nbsp;of&nbsp;arguments.&nbsp;It&nbsp;splits&nbsp;arguments 
on&nbsp;spaces,&nbsp;but&nbsp;handles&nbsp;embedded&nbsp;quotes,&nbsp;doublequotes,&nbsp;and&nbsp;escaped 
characters.&nbsp;It's&nbsp;impossible&nbsp;to&nbsp;do&nbsp;this&nbsp;with&nbsp;a&nbsp;regular&nbsp;expression,&nbsp;so&nbsp;I 
wrote&nbsp;a&nbsp;little&nbsp;state&nbsp;machine&nbsp;to&nbsp;parse&nbsp;the&nbsp;command&nbsp;line.</tt></dd></dl>
 <dl><dt><a name="-which">which</a>(filename)</dt><dd><tt>This&nbsp;takes&nbsp;a&nbsp;given&nbsp;filename;&nbsp;tries&nbsp;to&nbsp;find&nbsp;it&nbsp;in&nbsp;the&nbsp;environment&nbsp;path; 
then&nbsp;checks&nbsp;if&nbsp;it&nbsp;is&nbsp;executable.&nbsp;This&nbsp;returns&nbsp;the&nbsp;full&nbsp;path&nbsp;to&nbsp;the&nbsp;filename 
if&nbsp;found&nbsp;and&nbsp;executable.&nbsp;Otherwise&nbsp;this&nbsp;returns&nbsp;None.</tt></dd></dl>
</td></tr></table>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#55aa55">
<td colspan=3 valign=bottom>&nbsp; 
<big>Data</big></td></tr>
 
<tr><td bgcolor="#55aa55"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%">__all__ = ['ExceptionPexpect', 'EOF', 'TIMEOUT', 'spawn', 'run', 'which', 'split_command_line', '__version__', '__revision__'] 
__revision__ = '$Revision: 399 $' 
__version__ = '2.3'</td></tr></table>
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