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<html><head><title>Python: built-in module sys</title>
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<font color="#ffffff" face="helvetica, arial">&nbsp;<br><big><big><strong>sys</strong></big></big></font></td
><td align=right valign=bottom
><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br>(built-in)<br><a href="http://docs.python.org/library/sys">Module Docs</a></font></td></tr></table>
    <p><tt>This&nbsp;module&nbsp;provides&nbsp;access&nbsp;to&nbsp;some&nbsp;objects&nbsp;used&nbsp;or&nbsp;maintained&nbsp;by&nbsp;the<br>
interpreter&nbsp;and&nbsp;to&nbsp;functions&nbsp;that&nbsp;interact&nbsp;strongly&nbsp;with&nbsp;the&nbsp;interpreter.<br>
&nbsp;<br>
Dynamic&nbsp;objects:<br>
&nbsp;<br>
argv&nbsp;--&nbsp;command&nbsp;line&nbsp;arguments;&nbsp;argv[0]&nbsp;is&nbsp;the&nbsp;script&nbsp;pathname&nbsp;if&nbsp;known<br>
path&nbsp;--&nbsp;module&nbsp;search&nbsp;path;&nbsp;path[0]&nbsp;is&nbsp;the&nbsp;script&nbsp;directory,&nbsp;else&nbsp;''<br>
modules&nbsp;--&nbsp;dictionary&nbsp;of&nbsp;loaded&nbsp;modules<br>
&nbsp;<br>
displayhook&nbsp;--&nbsp;called&nbsp;to&nbsp;show&nbsp;results&nbsp;in&nbsp;an&nbsp;interactive&nbsp;session<br>
excepthook&nbsp;--&nbsp;called&nbsp;to&nbsp;handle&nbsp;any&nbsp;uncaught&nbsp;exception&nbsp;other&nbsp;than&nbsp;SystemExit<br>
&nbsp;&nbsp;To&nbsp;customize&nbsp;printing&nbsp;in&nbsp;an&nbsp;interactive&nbsp;session&nbsp;or&nbsp;to&nbsp;install&nbsp;a&nbsp;custom<br>
&nbsp;&nbsp;top-level&nbsp;exception&nbsp;handler,&nbsp;assign&nbsp;other&nbsp;functions&nbsp;to&nbsp;replace&nbsp;these.<br>
&nbsp;<br>
exitfunc&nbsp;--&nbsp;if&nbsp;sys.exitfunc&nbsp;exists,&nbsp;this&nbsp;routine&nbsp;is&nbsp;called&nbsp;when&nbsp;Python&nbsp;exits<br>
&nbsp;&nbsp;Assigning&nbsp;to&nbsp;sys.exitfunc&nbsp;is&nbsp;deprecated;&nbsp;use&nbsp;the&nbsp;atexit&nbsp;module&nbsp;instead.<br>
&nbsp;<br>
stdin&nbsp;--&nbsp;standard&nbsp;input&nbsp;file&nbsp;object;&nbsp;used&nbsp;by&nbsp;raw_input()&nbsp;and&nbsp;input()<br>
stdout&nbsp;--&nbsp;standard&nbsp;output&nbsp;file&nbsp;object;&nbsp;used&nbsp;by&nbsp;the&nbsp;print&nbsp;statement<br>
stderr&nbsp;--&nbsp;standard&nbsp;error&nbsp;object;&nbsp;used&nbsp;for&nbsp;error&nbsp;messages<br>
&nbsp;&nbsp;By&nbsp;assigning&nbsp;other&nbsp;file&nbsp;objects&nbsp;(or&nbsp;objects&nbsp;that&nbsp;behave&nbsp;like&nbsp;files)<br>
&nbsp;&nbsp;to&nbsp;these,&nbsp;it&nbsp;is&nbsp;possible&nbsp;to&nbsp;redirect&nbsp;all&nbsp;of&nbsp;the&nbsp;interpreter's&nbsp;I/O.<br>
&nbsp;<br>
last_type&nbsp;--&nbsp;type&nbsp;of&nbsp;last&nbsp;uncaught&nbsp;exception<br>
last_value&nbsp;--&nbsp;value&nbsp;of&nbsp;last&nbsp;uncaught&nbsp;exception<br>
last_traceback&nbsp;--&nbsp;traceback&nbsp;of&nbsp;last&nbsp;uncaught&nbsp;exception<br>
&nbsp;&nbsp;These&nbsp;three&nbsp;are&nbsp;only&nbsp;available&nbsp;in&nbsp;an&nbsp;interactive&nbsp;session&nbsp;after&nbsp;a<br>
&nbsp;&nbsp;traceback&nbsp;has&nbsp;been&nbsp;printed.<br>
&nbsp;<br>
exc_type&nbsp;--&nbsp;type&nbsp;of&nbsp;exception&nbsp;currently&nbsp;being&nbsp;handled<br>
exc_value&nbsp;--&nbsp;value&nbsp;of&nbsp;exception&nbsp;currently&nbsp;being&nbsp;handled<br>
exc_traceback&nbsp;--&nbsp;traceback&nbsp;of&nbsp;exception&nbsp;currently&nbsp;being&nbsp;handled<br>
&nbsp;&nbsp;The&nbsp;function&nbsp;<a href="#-exc_info">exc_info</a>()&nbsp;should&nbsp;be&nbsp;used&nbsp;instead&nbsp;of&nbsp;these&nbsp;three,<br>
&nbsp;&nbsp;because&nbsp;it&nbsp;is&nbsp;thread-safe.<br>
&nbsp;<br>
Static&nbsp;objects:<br>
&nbsp;<br>
maxint&nbsp;--&nbsp;the&nbsp;largest&nbsp;supported&nbsp;integer&nbsp;(the&nbsp;smallest&nbsp;is&nbsp;-maxint-1)<br>
maxsize&nbsp;--&nbsp;the&nbsp;largest&nbsp;supported&nbsp;length&nbsp;of&nbsp;containers.<br>
maxunicode&nbsp;--&nbsp;the&nbsp;largest&nbsp;supported&nbsp;character<br>
builtin_module_names&nbsp;--&nbsp;tuple&nbsp;of&nbsp;module&nbsp;names&nbsp;built&nbsp;into&nbsp;this&nbsp;interpreter<br>
version&nbsp;--&nbsp;the&nbsp;version&nbsp;of&nbsp;this&nbsp;interpreter&nbsp;as&nbsp;a&nbsp;string<br>
version_info&nbsp;--&nbsp;version&nbsp;information&nbsp;as&nbsp;a&nbsp;tuple<br>
hexversion&nbsp;--&nbsp;version&nbsp;information&nbsp;encoded&nbsp;as&nbsp;a&nbsp;single&nbsp;integer<br>
copyright&nbsp;--&nbsp;copyright&nbsp;notice&nbsp;pertaining&nbsp;to&nbsp;this&nbsp;interpreter<br>
platform&nbsp;--&nbsp;platform&nbsp;identifier<br>
executable&nbsp;--&nbsp;pathname&nbsp;of&nbsp;this&nbsp;Python&nbsp;interpreter<br>
prefix&nbsp;--&nbsp;prefix&nbsp;used&nbsp;to&nbsp;find&nbsp;the&nbsp;Python&nbsp;library<br>
exec_prefix&nbsp;--&nbsp;prefix&nbsp;used&nbsp;to&nbsp;find&nbsp;the&nbsp;machine-specific&nbsp;Python&nbsp;library<br>
__stdin__&nbsp;--&nbsp;the&nbsp;original&nbsp;stdin;&nbsp;don't&nbsp;touch!<br>
__stdout__&nbsp;--&nbsp;the&nbsp;original&nbsp;stdout;&nbsp;don't&nbsp;touch!<br>
__stderr__&nbsp;--&nbsp;the&nbsp;original&nbsp;stderr;&nbsp;don't&nbsp;touch!<br>
__displayhook__&nbsp;--&nbsp;the&nbsp;original&nbsp;displayhook;&nbsp;don't&nbsp;touch!<br>
__excepthook__&nbsp;--&nbsp;the&nbsp;original&nbsp;excepthook;&nbsp;don't&nbsp;touch!<br>
&nbsp;<br>
Functions:<br>
&nbsp;<br>
<a href="#-displayhook">displayhook</a>()&nbsp;--&nbsp;print&nbsp;an&nbsp;object&nbsp;to&nbsp;the&nbsp;screen,&nbsp;and&nbsp;save&nbsp;it&nbsp;in&nbsp;__builtin__._<br>
<a href="#-excepthook">excepthook</a>()&nbsp;--&nbsp;print&nbsp;an&nbsp;exception&nbsp;and&nbsp;its&nbsp;traceback&nbsp;to&nbsp;sys.stderr<br>
<a href="#-exc_info">exc_info</a>()&nbsp;--&nbsp;return&nbsp;thread-safe&nbsp;information&nbsp;about&nbsp;the&nbsp;current&nbsp;exception<br>
<a href="#-exc_clear">exc_clear</a>()&nbsp;--&nbsp;clear&nbsp;the&nbsp;exception&nbsp;state&nbsp;for&nbsp;the&nbsp;current&nbsp;thread<br>
<a href="#-exit">exit</a>()&nbsp;--&nbsp;exit&nbsp;the&nbsp;interpreter&nbsp;by&nbsp;raising&nbsp;SystemExit<br>
<a href="#-getdlopenflags">getdlopenflags</a>()&nbsp;--&nbsp;returns&nbsp;flags&nbsp;to&nbsp;be&nbsp;used&nbsp;for&nbsp;dlopen()&nbsp;calls<br>
<a href="#-getprofile">getprofile</a>()&nbsp;--&nbsp;get&nbsp;the&nbsp;global&nbsp;profiling&nbsp;function<br>
<a href="#-getrefcount">getrefcount</a>()&nbsp;--&nbsp;return&nbsp;the&nbsp;reference&nbsp;count&nbsp;for&nbsp;an&nbsp;object&nbsp;(plus&nbsp;one&nbsp;:-)<br>
<a href="#-getrecursionlimit">getrecursionlimit</a>()&nbsp;--&nbsp;return&nbsp;the&nbsp;max&nbsp;recursion&nbsp;depth&nbsp;for&nbsp;the&nbsp;interpreter<br>
<a href="#-getsizeof">getsizeof</a>()&nbsp;--&nbsp;return&nbsp;the&nbsp;size&nbsp;of&nbsp;an&nbsp;object&nbsp;in&nbsp;bytes<br>
<a href="#-gettrace">gettrace</a>()&nbsp;--&nbsp;get&nbsp;the&nbsp;global&nbsp;debug&nbsp;tracing&nbsp;function<br>
<a href="#-setcheckinterval">setcheckinterval</a>()&nbsp;--&nbsp;control&nbsp;how&nbsp;often&nbsp;the&nbsp;interpreter&nbsp;checks&nbsp;for&nbsp;events<br>
<a href="#-setdlopenflags">setdlopenflags</a>()&nbsp;--&nbsp;set&nbsp;the&nbsp;flags&nbsp;to&nbsp;be&nbsp;used&nbsp;for&nbsp;dlopen()&nbsp;calls<br>
<a href="#-setprofile">setprofile</a>()&nbsp;--&nbsp;set&nbsp;the&nbsp;global&nbsp;profiling&nbsp;function<br>
<a href="#-setrecursionlimit">setrecursionlimit</a>()&nbsp;--&nbsp;set&nbsp;the&nbsp;max&nbsp;recursion&nbsp;depth&nbsp;for&nbsp;the&nbsp;interpreter<br>
<a href="#-settrace">settrace</a>()&nbsp;--&nbsp;set&nbsp;the&nbsp;global&nbsp;debug&nbsp;tracing&nbsp;function</tt></p>
<p>
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<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Functions</strong></big></font></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="-__displayhook__"><strong>__displayhook__</strong></a> = displayhook(...)</dt><dd><tt><a href="#-displayhook">displayhook</a>(object)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Print&nbsp;an&nbsp;object&nbsp;to&nbsp;sys.stdout&nbsp;and&nbsp;also&nbsp;save&nbsp;it&nbsp;in&nbsp;__builtin__.</tt></dd></dl>
 <dl><dt><a name="-__excepthook__"><strong>__excepthook__</strong></a> = excepthook(...)</dt><dd><tt><a href="#-excepthook">excepthook</a>(exctype,&nbsp;value,&nbsp;traceback)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Handle&nbsp;an&nbsp;exception&nbsp;by&nbsp;displaying&nbsp;it&nbsp;with&nbsp;a&nbsp;traceback&nbsp;on&nbsp;sys.stderr.</tt></dd></dl>
 <dl><dt><a name="-call_tracing"><strong>call_tracing</strong></a>(...)</dt><dd><tt><a href="#-call_tracing">call_tracing</a>(func,&nbsp;args)&nbsp;-&gt;&nbsp;object<br>
&nbsp;<br>
Call&nbsp;func(*args),&nbsp;while&nbsp;tracing&nbsp;is&nbsp;enabled.&nbsp;&nbsp;The&nbsp;tracing&nbsp;state&nbsp;is<br>
saved,&nbsp;and&nbsp;restored&nbsp;afterwards.&nbsp;&nbsp;This&nbsp;is&nbsp;intended&nbsp;to&nbsp;be&nbsp;called&nbsp;from<br>
a&nbsp;debugger&nbsp;from&nbsp;a&nbsp;checkpoint,&nbsp;to&nbsp;recursively&nbsp;debug&nbsp;some&nbsp;other&nbsp;code.</tt></dd></dl>
 <dl><dt><a name="-callstats"><strong>callstats</strong></a>(...)</dt><dd><tt><a href="#-callstats">callstats</a>()&nbsp;-&gt;&nbsp;tuple&nbsp;of&nbsp;integers<br>
&nbsp;<br>
Return&nbsp;a&nbsp;tuple&nbsp;of&nbsp;function&nbsp;call&nbsp;statistics,&nbsp;if&nbsp;CALL_PROFILE&nbsp;was&nbsp;defined<br>
when&nbsp;Python&nbsp;was&nbsp;built.&nbsp;&nbsp;Otherwise,&nbsp;return&nbsp;None.<br>
&nbsp;<br>
When&nbsp;enabled,&nbsp;this&nbsp;function&nbsp;returns&nbsp;detailed,&nbsp;implementation-specific<br>
details&nbsp;about&nbsp;the&nbsp;number&nbsp;of&nbsp;function&nbsp;calls&nbsp;executed.&nbsp;The&nbsp;return&nbsp;value&nbsp;is<br>
a&nbsp;11-tuple&nbsp;where&nbsp;the&nbsp;entries&nbsp;in&nbsp;the&nbsp;tuple&nbsp;are&nbsp;counts&nbsp;of:<br>
0.&nbsp;all&nbsp;function&nbsp;calls<br>
1.&nbsp;calls&nbsp;to&nbsp;PyFunction_Type&nbsp;objects<br>
2.&nbsp;PyFunction&nbsp;calls&nbsp;that&nbsp;do&nbsp;not&nbsp;create&nbsp;an&nbsp;argument&nbsp;tuple<br>
3.&nbsp;PyFunction&nbsp;calls&nbsp;that&nbsp;do&nbsp;not&nbsp;create&nbsp;an&nbsp;argument&nbsp;tuple<br>
&nbsp;&nbsp;&nbsp;and&nbsp;bypass&nbsp;PyEval_EvalCodeEx()<br>
4.&nbsp;PyMethod&nbsp;calls<br>
5.&nbsp;PyMethod&nbsp;calls&nbsp;on&nbsp;bound&nbsp;methods<br>
6.&nbsp;PyType&nbsp;calls<br>
7.&nbsp;PyCFunction&nbsp;calls<br>
8.&nbsp;generator&nbsp;calls<br>
9.&nbsp;All&nbsp;other&nbsp;calls<br>
10.&nbsp;Number&nbsp;of&nbsp;stack&nbsp;pops&nbsp;performed&nbsp;by&nbsp;call_function()</tt></dd></dl>
 <dl><dt><a name="-displayhook"><strong>displayhook</strong></a>(...)</dt><dd><tt><a href="#-displayhook">displayhook</a>(object)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Print&nbsp;an&nbsp;object&nbsp;to&nbsp;sys.stdout&nbsp;and&nbsp;also&nbsp;save&nbsp;it&nbsp;in&nbsp;__builtin__.</tt></dd></dl>
 <dl><dt><a name="-exc_clear"><strong>exc_clear</strong></a>(...)</dt><dd><tt><a href="#-exc_clear">exc_clear</a>()&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Clear&nbsp;global&nbsp;information&nbsp;on&nbsp;the&nbsp;current&nbsp;exception.&nbsp;&nbsp;Subsequent&nbsp;calls&nbsp;to<br>
<a href="#-exc_info">exc_info</a>()&nbsp;will&nbsp;return&nbsp;(None,None,None)&nbsp;until&nbsp;another&nbsp;exception&nbsp;is&nbsp;raised<br>
in&nbsp;the&nbsp;current&nbsp;thread&nbsp;or&nbsp;the&nbsp;execution&nbsp;stack&nbsp;returns&nbsp;to&nbsp;a&nbsp;frame&nbsp;where<br>
another&nbsp;exception&nbsp;is&nbsp;being&nbsp;handled.</tt></dd></dl>
 <dl><dt><a name="-exc_info"><strong>exc_info</strong></a>(...)</dt><dd><tt><a href="#-exc_info">exc_info</a>()&nbsp;-&gt;&nbsp;(type,&nbsp;value,&nbsp;traceback)<br>
&nbsp;<br>
Return&nbsp;information&nbsp;about&nbsp;the&nbsp;most&nbsp;recent&nbsp;exception&nbsp;caught&nbsp;by&nbsp;an&nbsp;except<br>
clause&nbsp;in&nbsp;the&nbsp;current&nbsp;stack&nbsp;frame&nbsp;or&nbsp;in&nbsp;an&nbsp;older&nbsp;stack&nbsp;frame.</tt></dd></dl>
 <dl><dt><a name="-excepthook"><strong>excepthook</strong></a>(...)</dt><dd><tt><a href="#-excepthook">excepthook</a>(exctype,&nbsp;value,&nbsp;traceback)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Handle&nbsp;an&nbsp;exception&nbsp;by&nbsp;displaying&nbsp;it&nbsp;with&nbsp;a&nbsp;traceback&nbsp;on&nbsp;sys.stderr.</tt></dd></dl>
 <dl><dt><a name="-exit"><strong>exit</strong></a>(...)</dt><dd><tt><a href="#-exit">exit</a>([status])<br>
&nbsp;<br>
Exit&nbsp;the&nbsp;interpreter&nbsp;by&nbsp;raising&nbsp;SystemExit(status).<br>
If&nbsp;the&nbsp;status&nbsp;is&nbsp;omitted&nbsp;or&nbsp;None,&nbsp;it&nbsp;defaults&nbsp;to&nbsp;zero&nbsp;(i.e.,&nbsp;success).<br>
If&nbsp;the&nbsp;status&nbsp;is&nbsp;numeric,&nbsp;it&nbsp;will&nbsp;be&nbsp;used&nbsp;as&nbsp;the&nbsp;system&nbsp;exit&nbsp;status.<br>
If&nbsp;it&nbsp;is&nbsp;another&nbsp;kind&nbsp;of&nbsp;object,&nbsp;it&nbsp;will&nbsp;be&nbsp;printed&nbsp;and&nbsp;the&nbsp;system<br>
exit&nbsp;status&nbsp;will&nbsp;be&nbsp;one&nbsp;(i.e.,&nbsp;failure).</tt></dd></dl>
 <dl><dt><a name="-getcheckinterval"><strong>getcheckinterval</strong></a>(...)</dt><dd><tt><a href="#-getcheckinterval">getcheckinterval</a>()&nbsp;-&gt;&nbsp;current&nbsp;check&nbsp;interval;&nbsp;see&nbsp;<a href="#-setcheckinterval">setcheckinterval</a>().</tt></dd></dl>
 <dl><dt><a name="-getdefaultencoding"><strong>getdefaultencoding</strong></a>(...)</dt><dd><tt><a href="#-getdefaultencoding">getdefaultencoding</a>()&nbsp;-&gt;&nbsp;string<br>
&nbsp;<br>
Return&nbsp;the&nbsp;current&nbsp;default&nbsp;string&nbsp;encoding&nbsp;used&nbsp;by&nbsp;the&nbsp;Unicode&nbsp;<br>
implementation.</tt></dd></dl>
 <dl><dt><a name="-getdlopenflags"><strong>getdlopenflags</strong></a>(...)</dt><dd><tt><a href="#-getdlopenflags">getdlopenflags</a>()&nbsp;-&gt;&nbsp;int<br>
&nbsp;<br>
Return&nbsp;the&nbsp;current&nbsp;value&nbsp;of&nbsp;the&nbsp;flags&nbsp;that&nbsp;are&nbsp;used&nbsp;for&nbsp;dlopen()<br>
calls.&nbsp;The&nbsp;flag&nbsp;constants&nbsp;are&nbsp;defined&nbsp;in&nbsp;the&nbsp;dl&nbsp;module.</tt></dd></dl>
 <dl><dt><a name="-getfilesystemencoding"><strong>getfilesystemencoding</strong></a>(...)</dt><dd><tt><a href="#-getfilesystemencoding">getfilesystemencoding</a>()&nbsp;-&gt;&nbsp;string<br>
&nbsp;<br>
Return&nbsp;the&nbsp;encoding&nbsp;used&nbsp;to&nbsp;convert&nbsp;Unicode&nbsp;filenames&nbsp;in<br>
operating&nbsp;system&nbsp;filenames.</tt></dd></dl>
 <dl><dt><a name="-getprofile"><strong>getprofile</strong></a>(...)</dt><dd><tt><a href="#-getprofile">getprofile</a>()<br>
&nbsp;<br>
Return&nbsp;the&nbsp;profiling&nbsp;function&nbsp;set&nbsp;with&nbsp;sys.setprofile.<br>
See&nbsp;the&nbsp;profiler&nbsp;chapter&nbsp;in&nbsp;the&nbsp;library&nbsp;manual.</tt></dd></dl>
 <dl><dt><a name="-getrecursionlimit"><strong>getrecursionlimit</strong></a>(...)</dt><dd><tt><a href="#-getrecursionlimit">getrecursionlimit</a>()<br>
&nbsp;<br>
Return&nbsp;the&nbsp;current&nbsp;value&nbsp;of&nbsp;the&nbsp;recursion&nbsp;limit,&nbsp;the&nbsp;maximum&nbsp;depth<br>
of&nbsp;the&nbsp;Python&nbsp;interpreter&nbsp;stack.&nbsp;&nbsp;This&nbsp;limit&nbsp;prevents&nbsp;infinite<br>
recursion&nbsp;from&nbsp;causing&nbsp;an&nbsp;overflow&nbsp;of&nbsp;the&nbsp;C&nbsp;stack&nbsp;and&nbsp;crashing&nbsp;Python.</tt></dd></dl>
 <dl><dt><a name="-getrefcount"><strong>getrefcount</strong></a>(...)</dt><dd><tt><a href="#-getrefcount">getrefcount</a>(object)&nbsp;-&gt;&nbsp;integer<br>
&nbsp;<br>
Return&nbsp;the&nbsp;reference&nbsp;count&nbsp;of&nbsp;object.&nbsp;&nbsp;The&nbsp;count&nbsp;returned&nbsp;is&nbsp;generally<br>
one&nbsp;higher&nbsp;than&nbsp;you&nbsp;might&nbsp;expect,&nbsp;because&nbsp;it&nbsp;includes&nbsp;the&nbsp;(temporary)<br>
reference&nbsp;as&nbsp;an&nbsp;argument&nbsp;to&nbsp;<a href="#-getrefcount">getrefcount</a>().</tt></dd></dl>
 <dl><dt><a name="-getsizeof"><strong>getsizeof</strong></a>(...)</dt><dd><tt><a href="#-getsizeof">getsizeof</a>(object,&nbsp;default)&nbsp;-&gt;&nbsp;int<br>
&nbsp;<br>
Return&nbsp;the&nbsp;size&nbsp;of&nbsp;object&nbsp;in&nbsp;bytes.</tt></dd></dl>
 <dl><dt><a name="-gettrace"><strong>gettrace</strong></a>(...)</dt><dd><tt><a href="#-gettrace">gettrace</a>()<br>
&nbsp;<br>
Return&nbsp;the&nbsp;global&nbsp;debug&nbsp;tracing&nbsp;function&nbsp;set&nbsp;with&nbsp;sys.settrace.<br>
See&nbsp;the&nbsp;debugger&nbsp;chapter&nbsp;in&nbsp;the&nbsp;library&nbsp;manual.</tt></dd></dl>
 <dl><dt><a name="-setcheckinterval"><strong>setcheckinterval</strong></a>(...)</dt><dd><tt><a href="#-setcheckinterval">setcheckinterval</a>(n)<br>
&nbsp;<br>
Tell&nbsp;the&nbsp;Python&nbsp;interpreter&nbsp;to&nbsp;check&nbsp;for&nbsp;asynchronous&nbsp;events&nbsp;every<br>
n&nbsp;instructions.&nbsp;&nbsp;This&nbsp;also&nbsp;affects&nbsp;how&nbsp;often&nbsp;thread&nbsp;switches&nbsp;occur.</tt></dd></dl>
 <dl><dt><a name="-setdlopenflags"><strong>setdlopenflags</strong></a>(...)</dt><dd><tt><a href="#-setdlopenflags">setdlopenflags</a>(n)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Set&nbsp;the&nbsp;flags&nbsp;that&nbsp;will&nbsp;be&nbsp;used&nbsp;for&nbsp;dlopen()&nbsp;calls.&nbsp;Among&nbsp;other<br>
things,&nbsp;this&nbsp;will&nbsp;enable&nbsp;a&nbsp;lazy&nbsp;resolving&nbsp;of&nbsp;symbols&nbsp;when&nbsp;importing<br>
a&nbsp;module,&nbsp;if&nbsp;called&nbsp;as&nbsp;sys.<a href="#-setdlopenflags">setdlopenflags</a>(0)<br>
To&nbsp;share&nbsp;symbols&nbsp;across&nbsp;extension&nbsp;modules,&nbsp;call&nbsp;as<br>
sys.<a href="#-setdlopenflags">setdlopenflags</a>(dl.RTLD_NOW|dl.RTLD_GLOBAL)</tt></dd></dl>
 <dl><dt><a name="-setprofile"><strong>setprofile</strong></a>(...)</dt><dd><tt><a href="#-setprofile">setprofile</a>(function)<br>
&nbsp;<br>
Set&nbsp;the&nbsp;profiling&nbsp;function.&nbsp;&nbsp;It&nbsp;will&nbsp;be&nbsp;called&nbsp;on&nbsp;each&nbsp;function&nbsp;call<br>
and&nbsp;return.&nbsp;&nbsp;See&nbsp;the&nbsp;profiler&nbsp;chapter&nbsp;in&nbsp;the&nbsp;library&nbsp;manual.</tt></dd></dl>
 <dl><dt><a name="-setrecursionlimit"><strong>setrecursionlimit</strong></a>(...)</dt><dd><tt><a href="#-setrecursionlimit">setrecursionlimit</a>(n)<br>
&nbsp;<br>
Set&nbsp;the&nbsp;maximum&nbsp;depth&nbsp;of&nbsp;the&nbsp;Python&nbsp;interpreter&nbsp;stack&nbsp;to&nbsp;n.&nbsp;&nbsp;This<br>
limit&nbsp;prevents&nbsp;infinite&nbsp;recursion&nbsp;from&nbsp;causing&nbsp;an&nbsp;overflow&nbsp;of&nbsp;the&nbsp;C<br>
stack&nbsp;and&nbsp;crashing&nbsp;Python.&nbsp;&nbsp;The&nbsp;highest&nbsp;possible&nbsp;limit&nbsp;is&nbsp;platform-<br>
dependent.</tt></dd></dl>
 <dl><dt><a name="-settrace"><strong>settrace</strong></a>(...)</dt><dd><tt><a href="#-settrace">settrace</a>(function)<br>
&nbsp;<br>
Set&nbsp;the&nbsp;global&nbsp;debug&nbsp;tracing&nbsp;function.&nbsp;&nbsp;It&nbsp;will&nbsp;be&nbsp;called&nbsp;on&nbsp;each<br>
function&nbsp;call.&nbsp;&nbsp;See&nbsp;the&nbsp;debugger&nbsp;chapter&nbsp;in&nbsp;the&nbsp;library&nbsp;manual.</tt></dd></dl>
</td></tr></table><p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#55aa55">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Data</strong></big></font></td></tr>
    
<tr><td bgcolor="#55aa55"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><strong>__stderr__</strong> = &lt;open file '&lt;stderr&gt;', mode 'w' at 0x7fdbe72451c8&gt;<br>
<strong>__stdin__</strong> = &lt;open file '&lt;stdin&gt;', mode 'r' at 0x7fdbe72450b8&gt;<br>
<strong>__stdout__</strong> = &lt;open file '&lt;stdout&gt;', mode 'w' at 0x7fdbe7245140&gt;<br>
<strong>api_version</strong> = 1013<br>
<strong>argv</strong> = ['./make_doc.py']<br>
<strong>builtin_module_names</strong> = ('__builtin__', '__main__', '_ast', '_codecs', '_sre', '_symtable', '_warnings', 'errno', 'exceptions', 'gc', 'imp', 'marshal', 'posix', 'pwd', 'signal', 'sys', 'thread', 'xxsubtype', 'zipimport')<br>
<strong>byteorder</strong> = 'little'<br>
<strong>copyright</strong> = 'Copyright (c) 2001-2009 Python Software Foundati...ematisch Centrum, Amsterdam.<font color="#c040c0">\n</font>All Rights Reserved.'<br>
<strong>dont_write_bytecode</strong> = False<br>
<strong>exc_value</strong> = TypeError('arg is a built-in module',)<br>
<strong>exec_prefix</strong> = '/usr'<br>
<strong>executable</strong> = '/usr/bin/python'<br>
<strong>flags</strong> = sys.flags(debug=0, py3k_warning=0, division_warn...abcheck=0, verbose=0, unicode=0, bytes_warning=0)<br>
<strong>float_info</strong> = sys.floatinfo(max=1.7976931348623157e+308, max_e...psilon=2.2204460492503131e-16, radix=2, rounds=1)<br>
<strong>hexversion</strong> = 33948912<br>
<strong>maxint</strong> = 9223372036854775807<br>
<strong>maxsize</strong> = 9223372036854775807<br>
<strong>maxunicode</strong> = 65535<br>
<strong>meta_path</strong> = []<br>
<strong>modules</strong> = {'UserDict': &lt;module 'UserDict' from '/usr/lib/python2.6/UserDict.pyc'&gt;, '__builtin__': &lt;module '__builtin__' (built-in)&gt;, '__future__': &lt;module '__future__' from '/usr/lib/python2.6/__future__.pyc'&gt;, '__main__': &lt;module '__main__' from './make_doc.py'&gt;, '_abcoll': &lt;module '_abcoll' from '/usr/lib/python2.6/_abcoll.pyc'&gt;, '_codecs': &lt;module '_codecs' (built-in)&gt;, '_collections': &lt;module '_collections' from '/usr/lib/python2.6/lib-dynload/_collections.so'&gt;, '_curses': &lt;module '_curses' from '/usr/lib/python2.6/lib-dynload/_curses.so'&gt;, '_random': &lt;module '_random' from '/usr/lib/python2.6/lib-dynload/_random.so'&gt;, '_socket': &lt;module '_socket' from '/usr/lib/python2.6/lib-dynload/_socket.so'&gt;, ...}<br>
<strong>path</strong> = ['/home/hut/.ranger', '/home/hut/ranger', '/usr/lib/python26.zip', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old', '/usr/lib/python2.6/lib-dynload', '/usr/lib/python2.6/site-packages', '/usr/lib/python2.6/site-packages/PIL', '/usr/lib/python2.6/site-packages/gst-0.10', '/usr/lib/python2.6/site-packages/gtk-2.0', '/home/hut/.ranger']<br>
<strong>path_hooks</strong> = [&lt;type 'zipimport.zipimporter'&gt;]<br>
<strong>path_importer_cache</strong> = {'.': None, './make_doc.py': &lt;imp.NullImporter object at 0x7fdbe71e8080&gt;, '/home/hut/.ranger': None, '/home/hut/.ranger/colorschemes': None, '/home/hut/ranger': None, '/home/hut/ranger/ranger': None, '/home/hut/ranger/ranger/api': None, '/home/hut/ranger/ranger/colorschemes': None, '/home/hut/ranger/ranger/container': None, '/home/hut/ranger/ranger/defaults': None, ...}<br>
<strong>platform</strong> = 'linux2'<br>
<strong>prefix</strong> = '/usr'<br>
<strong>py3kwarning</strong> = False<br>
<strong>stderr</strong> = &lt;open file '&lt;stderr&gt;', mode 'w' at 0x7fdbe72451c8&gt;<br>
<strong>stdin</strong> = &lt;open file '&lt;stdin&gt;', mode 'r' at 0x7fdbe72450b8&gt;<br>
<strong>stdout</strong> = &lt;open file '&lt;stdout&gt;', mode 'w' at 0x7fdbe7245140&gt;<br>
<strong>subversion</strong> = ('CPython', 'tags/r264', '75706')<br>
<strong>version</strong> = '2.6.4 (r264:75706, Oct 27 2009, 06:25:13) <font color="#c040c0">\n</font>[GCC 4.4.1]'<br>
<strong>version_info</strong> = (2, 6, 4, 'final', 0)<br>
<strong>warnoptions</strong> = []</td></tr></table>
</body></html>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><title>Python: built-in module sys</title>
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<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading">
<tr bgcolor="#7799ee">
<td valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial">&nbsp;<br><big><big><strong>sys</strong></big></big></font></td
><td align=right valign=bottom
><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br>(built-in)<br><a href="http://docs.python.org/library/sys">Module Docs</a></font></td></tr></table>
    <p><tt>This&nbsp;module&nbsp;provides&nbsp;access&nbsp;to&nbsp;some&nbsp;objects&nbsp;used&nbsp;or&nbsp;maintained&nbsp;by&nbsp;the<br>
interpreter&nbsp;and&nbsp;to&nbsp;functions&nbsp;that&nbsp;interact&nbsp;strongly&nbsp;with&nbsp;the&nbsp;interpreter.<br>
&nbsp;<br>
Dynamic&nbsp;objects:<br>
&nbsp;<br>
argv&nbsp;--&nbsp;command&nbsp;line&nbsp;arguments;&nbsp;argv[0]&nbsp;is&nbsp;the&nbsp;script&nbsp;pathname&nbsp;if&nbsp;known<br>
path&nbsp;--&nbsp;module&nbsp;search&nbsp;path;&nbsp;path[0]&nbsp;is&nbsp;the&nbsp;script&nbsp;directory,&nbsp;else&nbsp;''<br>
modules&nbsp;--&nbsp;dictionary&nbsp;of&nbsp;loaded&nbsp;modules<br>
&nbsp;<br>
displayhook&nbsp;--&nbsp;called&nbsp;to&nbsp;show&nbsp;results&nbsp;in&nbsp;an&nbsp;interactive&nbsp;session<br>
excepthook&nbsp;--&nbsp;called&nbsp;to&nbsp;handle&nbsp;any&nbsp;uncaught&nbsp;exception&nbsp;other&nbsp;than&nbsp;SystemExit<br>
&nbsp;&nbsp;To&nbsp;customize&nbsp;printing&nbsp;in&nbsp;an&nbsp;interactive&nbsp;session&nbsp;or&nbsp;to&nbsp;install&nbsp;a&nbsp;custom<br>
&nbsp;&nbsp;top-level&nbsp;exception&nbsp;handler,&nbsp;assign&nbsp;other&nbsp;functions&nbsp;to&nbsp;replace&nbsp;these.<br>
&nbsp;<br>
exitfunc&nbsp;--&nbsp;if&nbsp;sys.exitfunc&nbsp;exists,&nbsp;this&nbsp;routine&nbsp;is&nbsp;called&nbsp;when&nbsp;Python&nbsp;exits<br>
&nbsp;&nbsp;Assigning&nbsp;to&nbsp;sys.exitfunc&nbsp;is&nbsp;deprecated;&nbsp;use&nbsp;the&nbsp;atexit&nbsp;module&nbsp;instead.<br>
&nbsp;<br>
stdin&nbsp;--&nbsp;standard&nbsp;input&nbsp;file&nbsp;object;&nbsp;used&nbsp;by&nbsp;raw_input()&nbsp;and&nbsp;input()<br>
stdout&nbsp;--&nbsp;standard&nbsp;output&nbsp;file&nbsp;object;&nbsp;used&nbsp;by&nbsp;the&nbsp;print&nbsp;statement<br>
stderr&nbsp;--&nbsp;standard&nbsp;error&nbsp;object;&nbsp;used&nbsp;for&nbsp;error&nbsp;messages<br>
&nbsp;&nbsp;By&nbsp;assigning&nbsp;other&nbsp;file&nbsp;objects&nbsp;(or&nbsp;objects&nbsp;that&nbsp;behave&nbsp;like&nbsp;files)<br>
&nbsp;&nbsp;to&nbsp;these,&nbsp;it&nbsp;is&nbsp;possible&nbsp;to&nbsp;redirect&nbsp;all&nbsp;of&nbsp;the&nbsp;interpreter's&nbsp;I/O.<br>
&nbsp;<br>
last_type&nbsp;--&nbsp;type&nbsp;of&nbsp;last&nbsp;uncaught&nbsp;exception<br>
last_value&nbsp;--&nbsp;value&nbsp;of&nbsp;last&nbsp;uncaught&nbsp;exception<br>
last_traceback&nbsp;--&nbsp;traceback&nbsp;of&nbsp;last&nbsp;uncaught&nbsp;exception<br>
&nbsp;&nbsp;These&nbsp;three&nbsp;are&nbsp;only&nbsp;available&nbsp;in&nbsp;an&nbsp;interactive&nbsp;session&nbsp;after&nbsp;a<br>
&nbsp;&nbsp;traceback&nbsp;has&nbsp;been&nbsp;printed.<br>
&nbsp;<br>
exc_type&nbsp;--&nbsp;type&nbsp;of&nbsp;exception&nbsp;currently&nbsp;being&nbsp;handled<br>
exc_value&nbsp;--&nbsp;value&nbsp;of&nbsp;exception&nbsp;currently&nbsp;being&nbsp;handled<br>
exc_traceback&nbsp;--&nbsp;traceback&nbsp;of&nbsp;exception&nbsp;currently&nbsp;being&nbsp;handled<br>
&nbsp;&nbsp;The&nbsp;function&nbsp;<a href="#-exc_info">exc_info</a>()&nbsp;should&nbsp;be&nbsp;used&nbsp;instead&nbsp;of&nbsp;these&nbsp;three,<br>
&nbsp;&nbsp;because&nbsp;it&nbsp;is&nbsp;thread-safe.<br>
&nbsp;<br>
Static&nbsp;objects:<br>
&nbsp;<br>
maxint&nbsp;--&nbsp;the&nbsp;largest&nbsp;supported&nbsp;integer&nbsp;(the&nbsp;smallest&nbsp;is&nbsp;-maxint-1)<br>
maxsize&nbsp;--&nbsp;the&nbsp;largest&nbsp;supported&nbsp;length&nbsp;of&nbsp;containers.<br>
maxunicode&nbsp;--&nbsp;the&nbsp;largest&nbsp;supported&nbsp;character<br>
builtin_module_names&nbsp;--&nbsp;tuple&nbsp;of&nbsp;module&nbsp;names&nbsp;built&nbsp;into&nbsp;this&nbsp;interpreter<br>
version&nbsp;--&nbsp;the&nbsp;version&nbsp;of&nbsp;this&nbsp;interpreter&nbsp;as&nbsp;a&nbsp;string<br>
version_info&nbsp;--&nbsp;version&nbsp;information&nbsp;as&nbsp;a&nbsp;tuple<br>
hexversion&nbsp;--&nbsp;version&nbsp;information&nbsp;encoded&nbsp;as&nbsp;a&nbsp;single&nbsp;integer<br>
copyright&nbsp;--&nbsp;copyright&nbsp;notice&nbsp;pertaining&nbsp;to&nbsp;this&nbsp;interpreter<br>
platform&nbsp;--&nbsp;platform&nbsp;identifier<br>
executable&nbsp;--&nbsp;pathname&nbsp;of&nbsp;this&nbsp;Python&nbsp;interpreter<br>
prefix&nbsp;--&nbsp;prefix&nbsp;used&nbsp;to&nbsp;find&nbsp;the&nbsp;Python&nbsp;library<br>
exec_prefix&nbsp;--&nbsp;prefix&nbsp;used&nbsp;to&nbsp;find&nbsp;the&nbsp;machine-specific&nbsp;Python&nbsp;library<br>
__stdin__&nbsp;--&nbsp;the&nbsp;original&nbsp;stdin;&nbsp;don't&nbsp;touch!<br>
__stdout__&nbsp;--&nbsp;the&nbsp;original&nbsp;stdout;&nbsp;don't&nbsp;touch!<br>
__stderr__&nbsp;--&nbsp;the&nbsp;original&nbsp;stderr;&nbsp;don't&nbsp;touch!<br>
__displayhook__&nbsp;--&nbsp;the&nbsp;original&nbsp;displayhook;&nbsp;don't&nbsp;touch!<br>
__excepthook__&nbsp;--&nbsp;the&nbsp;original&nbsp;excepthook;&nbsp;don't&nbsp;touch!<br>
&nbsp;<br>
Functions:<br>
&nbsp;<br>
<a href="#-displayhook">displayhook</a>()&nbsp;--&nbsp;print&nbsp;an&nbsp;object&nbsp;to&nbsp;the&nbsp;screen,&nbsp;and&nbsp;save&nbsp;it&nbsp;in&nbsp;__builtin__._<br>
<a href="#-excepthook">excepthook</a>()&nbsp;--&nbsp;print&nbsp;an&nbsp;exception&nbsp;and&nbsp;its&nbsp;traceback&nbsp;to&nbsp;sys.stderr<br>
<a href="#-exc_info">exc_info</a>()&nbsp;--&nbsp;return&nbsp;thread-safe&nbsp;information&nbsp;about&nbsp;the&nbsp;current&nbsp;exception<br>
<a href="#-exc_clear">exc_clear</a>()&nbsp;--&nbsp;clear&nbsp;the&nbsp;exception&nbsp;state&nbsp;for&nbsp;the&nbsp;current&nbsp;thread<br>
<a href="#-exit">exit</a>()&nbsp;--&nbsp;exit&nbsp;the&nbsp;interpreter&nbsp;by&nbsp;raising&nbsp;SystemExit<br>
<a href="#-getdlopenflags">getdlopenflags</a>()&nbsp;--&nbsp;returns&nbsp;flags&nbsp;to&nbsp;be&nbsp;used&nbsp;for&nbsp;dlopen()&nbsp;calls<br>
<a href="#-getprofile">getprofile</a>()&nbsp;--&nbsp;get&nbsp;the&nbsp;global&nbsp;profiling&nbsp;function<br>
<a href="#-getrefcount">getrefcount</a>()&nbsp;--&nbsp;return&nbsp;the&nbsp;reference&nbsp;count&nbsp;for&nbsp;an&nbsp;object&nbsp;(plus&nbsp;one&nbsp;:-)<br>
<a href="#-getrecursionlimit">getrecursionlimit</a>()&nbsp;--&nbsp;return&nbsp;the&nbsp;max&nbsp;recursion&nbsp;depth&nbsp;for&nbsp;the&nbsp;interpreter<br>
<a href="#-getsizeof">getsizeof</a>()&nbsp;--&nbsp;return&nbsp;the&nbsp;size&nbsp;of&nbsp;an&nbsp;object&nbsp;in&nbsp;bytes<br>
<a href="#-gettrace">gettrace</a>()&nbsp;--&nbsp;get&nbsp;the&nbsp;global&nbsp;debug&nbsp;tracing&nbsp;function<br>
<a href="#-setcheckinterval">setcheckinterval</a>()&nbsp;--&nbsp;control&nbsp;how&nbsp;often&nbsp;the&nbsp;interpreter&nbsp;checks&nbsp;for&nbsp;events<br>
<a href="#-setdlopenflags">setdlopenflags</a>()&nbsp;--&nbsp;set&nbsp;the&nbsp;flags&nbsp;to&nbsp;be&nbsp;used&nbsp;for&nbsp;dlopen()&nbsp;calls<br>
<a href="#-setprofile">setprofile</a>()&nbsp;--&nbsp;set&nbsp;the&nbsp;global&nbsp;profiling&nbsp;function<br>
<a href="#-setrecursionlimit">setrecursionlimit</a>()&nbsp;--&nbsp;set&nbsp;the&nbsp;max&nbsp;recursion&nbsp;depth&nbsp;for&nbsp;the&nbsp;interpreter<br>
<a href="#-settrace">settrace</a>()&nbsp;--&nbsp;set&nbsp;the&nbsp;global&nbsp;debug&nbsp;tracing&nbsp;function</tt></p>
<p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#eeaa77">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Functions</strong></big></font></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="-__displayhook__"><strong>__displayhook__</strong></a> = displayhook(...)</dt><dd><tt><a href="#-displayhook">displayhook</a>(object)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Print&nbsp;an&nbsp;object&nbsp;to&nbsp;sys.stdout&nbsp;and&nbsp;also&nbsp;save&nbsp;it&nbsp;in&nbsp;__builtin__.</tt></dd></dl>
 <dl><dt><a name="-__excepthook__"><strong>__excepthook__</strong></a> = excepthook(...)</dt><dd><tt><a href="#-excepthook">excepthook</a>(exctype,&nbsp;value,&nbsp;traceback)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Handle&nbsp;an&nbsp;exception&nbsp;by&nbsp;displaying&nbsp;it&nbsp;with&nbsp;a&nbsp;traceback&nbsp;on&nbsp;sys.stderr.</tt></dd></dl>
 <dl><dt><a name="-call_tracing"><strong>call_tracing</strong></a>(...)</dt><dd><tt><a href="#-call_tracing">call_tracing</a>(func,&nbsp;args)&nbsp;-&gt;&nbsp;object<br>
&nbsp;<br>
Call&nbsp;func(*args),&nbsp;while&nbsp;tracing&nbsp;is&nbsp;enabled.&nbsp;&nbsp;The&nbsp;tracing&nbsp;state&nbsp;is<br>
saved,&nbsp;and&nbsp;restored&nbsp;afterwards.&nbsp;&nbsp;This&nbsp;is&nbsp;intended&nbsp;to&nbsp;be&nbsp;called&nbsp;from<br>
a&nbsp;debugger&nbsp;from&nbsp;a&nbsp;checkpoint,&nbsp;to&nbsp;recursively&nbsp;debug&nbsp;some&nbsp;other&nbsp;code.</tt></dd></dl>
 <dl><dt><a name="-callstats"><strong>callstats</strong></a>(...)</dt><dd><tt><a href="#-callstats">callstats</a>()&nbsp;-&gt;&nbsp;tuple&nbsp;of&nbsp;integers<br>
&nbsp;<br>
Return&nbsp;a&nbsp;tuple&nbsp;of&nbsp;function&nbsp;call&nbsp;statistics,&nbsp;if&nbsp;CALL_PROFILE&nbsp;was&nbsp;defined<br>
when&nbsp;Python&nbsp;was&nbsp;built.&nbsp;&nbsp;Otherwise,&nbsp;return&nbsp;None.<br>
&nbsp;<br>
When&nbsp;enabled,&nbsp;this&nbsp;function&nbsp;returns&nbsp;detailed,&nbsp;implementation-specific<br>
details&nbsp;about&nbsp;the&nbsp;number&nbsp;of&nbsp;function&nbsp;calls&nbsp;executed.&nbsp;The&nbsp;return&nbsp;value&nbsp;is<br>
a&nbsp;11-tuple&nbsp;where&nbsp;the&nbsp;entries&nbsp;in&nbsp;the&nbsp;tuple&nbsp;are&nbsp;counts&nbsp;of:<br>
0.&nbsp;all&nbsp;function&nbsp;calls<br>
1.&nbsp;calls&nbsp;to&nbsp;PyFunction_Type&nbsp;objects<br>
2.&nbsp;PyFunction&nbsp;calls&nbsp;that&nbsp;do&nbsp;not&nbsp;create&nbsp;an&nbsp;argument&nbsp;tuple<br>
3.&nbsp;PyFunction&nbsp;calls&nbsp;that&nbsp;do&nbsp;not&nbsp;create&nbsp;an&nbsp;argument&nbsp;tuple<br>
&nbsp;&nbsp;&nbsp;and&nbsp;bypass&nbsp;PyEval_EvalCodeEx()<br>
4.&nbsp;PyMethod&nbsp;calls<br>
5.&nbsp;PyMethod&nbsp;calls&nbsp;on&nbsp;bound&nbsp;methods<br>
6.&nbsp;PyType&nbsp;calls<br>
7.&nbsp;PyCFunction&nbsp;calls<br>
8.&nbsp;generator&nbsp;calls<br>
9.&nbsp;All&nbsp;other&nbsp;calls<br>
10.&nbsp;Number&nbsp;of&nbsp;stack&nbsp;pops&nbsp;performed&nbsp;by&nbsp;call_function()</tt></dd></dl>
 <dl><dt><a name="-displayhook"><strong>displayhook</strong></a>(...)</dt><dd><tt><a href="#-displayhook">displayhook</a>(object)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Print&nbsp;an&nbsp;object&nbsp;to&nbsp;sys.stdout&nbsp;and&nbsp;also&nbsp;save&nbsp;it&nbsp;in&nbsp;__builtin__.</tt></dd></dl>
 <dl><dt><a name="-exc_clear"><strong>exc_clear</strong></a>(...)</dt><dd><tt><a href="#-exc_clear">exc_clear</a>()&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Clear&nbsp;global&nbsp;information&nbsp;on&nbsp;the&nbsp;current&nbsp;exception.&nbsp;&nbsp;Subsequent&nbsp;calls&nbsp;to<br>
<a href="#-exc_info">exc_info</a>()&nbsp;will&nbsp;return&nbsp;(None,None,None)&nbsp;until&nbsp;another&nbsp;exception&nbsp;is&nbsp;raised<br>
in&nbsp;the&nbsp;current&nbsp;thread&nbsp;or&nbsp;the&nbsp;execution&nbsp;stack&nbsp;returns&nbsp;to&nbsp;a&nbsp;frame&nbsp;where<br>
another&nbsp;exception&nbsp;is&nbsp;being&nbsp;handled.</tt></dd></dl>
 <dl><dt><a name="-exc_info"><strong>exc_info</strong></a>(...)</dt><dd><tt><a href="#-exc_info">exc_info</a>()&nbsp;-&gt;&nbsp;(type,&nbsp;value,&nbsp;traceback)<br>
&nbsp;<br>
Return&nbsp;information&nbsp;about&nbsp;the&nbsp;most&nbsp;recent&nbsp;exception&nbsp;caught&nbsp;by&nbsp;an&nbsp;except<br>
clause&nbsp;in&nbsp;the&nbsp;current&nbsp;stack&nbsp;frame&nbsp;or&nbsp;in&nbsp;an&nbsp;older&nbsp;stack&nbsp;frame.</tt></dd></dl>
 <dl><dt><a name="-excepthook"><strong>excepthook</strong></a>(...)</dt><dd><tt><a href="#-excepthook">excepthook</a>(exctype,&nbsp;value,&nbsp;traceback)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Handle&nbsp;an&nbsp;exception&nbsp;by&nbsp;displaying&nbsp;it&nbsp;with&nbsp;a&nbsp;traceback&nbsp;on&nbsp;sys.stderr.</tt></dd></dl>
 <dl><dt><a name="-exit"><strong>exit</strong></a>(...)</dt><dd><tt><a href="#-exit">exit</a>([status])<br>
&nbsp;<br>
Exit&nbsp;the&nbsp;interpreter&nbsp;by&nbsp;raising&nbsp;SystemExit(status).<br>
If&nbsp;the&nbsp;status&nbsp;is&nbsp;omitted&nbsp;or&nbsp;None,&nbsp;it&nbsp;defaults&nbsp;to&nbsp;zero&nbsp;(i.e.,&nbsp;success).<br>
If&nbsp;the&nbsp;status&nbsp;is&nbsp;numeric,&nbsp;it&nbsp;will&nbsp;be&nbsp;used&nbsp;as&nbsp;the&nbsp;system&nbsp;exit&nbsp;status.<br>
If&nbsp;it&nbsp;is&nbsp;another&nbsp;kind&nbsp;of&nbsp;object,&nbsp;it&nbsp;will&nbsp;be&nbsp;printed&nbsp;and&nbsp;the&nbsp;system<br>
exit&nbsp;status&nbsp;will&nbsp;be&nbsp;one&nbsp;(i.e.,&nbsp;failure).</tt></dd></dl>
 <dl><dt><a name="-getcheckinterval"><strong>getcheckinterval</strong></a>(...)</dt><dd><tt><a href="#-getcheckinterval">getcheckinterval</a>()&nbsp;-&gt;&nbsp;current&nbsp;check&nbsp;interval;&nbsp;see&nbsp;<a href="#-setcheckinterval">setcheckinterval</a>().</tt></dd></dl>
 <dl><dt><a name="-getdefaultencoding"><strong>getdefaultencoding</strong></a>(...)</dt><dd><tt><a href="#-getdefaultencoding">getdefaultencoding</a>()&nbsp;-&gt;&nbsp;string<br>
&nbsp;<br>
Return&nbsp;the&nbsp;current&nbsp;default&nbsp;string&nbsp;encoding&nbsp;used&nbsp;by&nbsp;the&nbsp;Unicode&nbsp;<br>
implementation.</tt></dd></dl>
 <dl><dt><a name="-getdlopenflags"><strong>getdlopenflags</strong></a>(...)</dt><dd><tt><a href="#-getdlopenflags">getdlopenflags</a>()&nbsp;-&gt;&nbsp;int<br>
&nbsp;<br>
Return&nbsp;the&nbsp;current&nbsp;value&nbsp;of&nbsp;the&nbsp;flags&nbsp;that&nbsp;are&nbsp;used&nbsp;for&nbsp;dlopen()<br>
calls.&nbsp;The&nbsp;flag&nbsp;constants&nbsp;are&nbsp;defined&nbsp;in&nbsp;the&nbsp;dl&nbsp;module.</tt></dd></dl>
 <dl><dt><a name="-getfilesystemencoding"><strong>getfilesystemencoding</strong></a>(...)</dt><dd><tt><a href="#-getfilesystemencoding">getfilesystemencoding</a>()&nbsp;-&gt;&nbsp;string<br>
&nbsp;<br>
Return&nbsp;the&nbsp;encoding&nbsp;used&nbsp;to&nbsp;convert&nbsp;Unicode&nbsp;filenames&nbsp;in<br>
operating&nbsp;system&nbsp;filenames.</tt></dd></dl>
 <dl><dt><a name="-getprofile"><strong>getprofile</strong></a>(...)</dt><dd><tt><a href="#-getprofile">getprofile</a>()<br>
&nbsp;<br>
Return&nbsp;the&nbsp;profiling&nbsp;function&nbsp;set&nbsp;with&nbsp;sys.setprofile.<br>
See&nbsp;the&nbsp;profiler&nbsp;chapter&nbsp;in&nbsp;the&nbsp;library&nbsp;manual.</tt></dd></dl>
 <dl><dt><a name="-getrecursionlimit"><strong>getrecursionlimit</strong></a>(...)</dt><dd><tt><a href="#-getrecursionlimit">getrecursionlimit</a>()<br>
&nbsp;<br>
Return&nbsp;the&nbsp;current&nbsp;value&nbsp;of&nbsp;the&nbsp;recursion&nbsp;limit,&nbsp;the&nbsp;maximum&nbsp;depth<br>
of&nbsp;the&nbsp;Python&nbsp;interpreter&nbsp;stack.&nbsp;&nbsp;This&nbsp;limit&nbsp;prevents&nbsp;infinite<br>
recursion&nbsp;from&nbsp;causing&nbsp;an&nbsp;overflow&nbsp;of&nbsp;the&nbsp;C&nbsp;stack&nbsp;and&nbsp;crashing&nbsp;Python.</tt></dd></dl>
 <dl><dt><a name="-getrefcount"><strong>getrefcount</strong></a>(...)</dt><dd><tt><a href="#-getrefcount">getrefcount</a>(object)&nbsp;-&gt;&nbsp;integer<br>
&nbsp;<br>
Return&nbsp;the&nbsp;reference&nbsp;count&nbsp;of&nbsp;object.&nbsp;&nbsp;The&nbsp;count&nbsp;returned&nbsp;is&nbsp;generally<br>
one&nbsp;higher&nbsp;than&nbsp;you&nbsp;might&nbsp;expect,&nbsp;because&nbsp;it&nbsp;includes&nbsp;the&nbsp;(temporary)<br>
reference&nbsp;as&nbsp;an&nbsp;argument&nbsp;to&nbsp;<a href="#-getrefcount">getrefcount</a>().</tt></dd></dl>
 <dl><dt><a name="-getsizeof"><strong>getsizeof</strong></a>(...)</dt><dd><tt><a href="#-getsizeof">getsizeof</a>(object,&nbsp;default)&nbsp;-&gt;&nbsp;int<br>
&nbsp;<br>
Return&nbsp;the&nbsp;size&nbsp;of&nbsp;object&nbsp;in&nbsp;bytes.</tt></dd></dl>
 <dl><dt><a name="-gettrace"><strong>gettrace</strong></a>(...)</dt><dd><tt><a href="#-gettrace">gettrace</a>()<br>
&nbsp;<br>
Return&nbsp;the&nbsp;global&nbsp;debug&nbsp;tracing&nbsp;function&nbsp;set&nbsp;with&nbsp;sys.settrace.<br>
See&nbsp;the&nbsp;debugger&nbsp;chapter&nbsp;in&nbsp;the&nbsp;library&nbsp;manual.</tt></dd></dl>
 <dl><dt><a name="-setcheckinterval"><strong>setcheckinterval</strong></a>(...)</dt><dd><tt><a href="#-setcheckinterval">setcheckinterval</a>(n)<br>
&nbsp;<br>
Tell&nbsp;the&nbsp;Python&nbsp;interpreter&nbsp;to&nbsp;check&nbsp;for&nbsp;asynchronous&nbsp;events&nbsp;every<br>
n&nbsp;instructions.&nbsp;&nbsp;This&nbsp;also&nbsp;affects&nbsp;how&nbsp;often&nbsp;thread&nbsp;switches&nbsp;occur.</tt></dd></dl>
 <dl><dt><a name="-setdlopenflags"><strong>setdlopenflags</strong></a>(...)</dt><dd><tt><a href="#-setdlopenflags">setdlopenflags</a>(n)&nbsp;-&gt;&nbsp;None<br>
&nbsp;<br>
Set&nbsp;the&nbsp;flags&nbsp;that&nbsp;will&nbsp;be&nbsp;used&nbsp;for&nbsp;dlopen()&nbsp;calls.&nbsp;Among&nbsp;other<br>
things,&nbsp;this&nbsp;will&nbsp;enable&nbsp;a&nbsp;lazy&nbsp;resolving&nbsp;of&nbsp;symbols&nbsp;when&nbsp;importing<br>
a&nbsp;module,&nbsp;if&nbsp;called&nbsp;as&nbsp;sys.<a href="#-setdlopenflags">setdlopenflags</a>(0)<br>
To&nbsp;share&nbsp;symbols&nbsp;across&nbsp;extension&nbsp;modules,&nbsp;call&nbsp;as<br>
sys.<a href="#-setdlopenflags">setdlopenflags</a>(dl.RTLD_NOW|dl.RTLD_GLOBAL)</tt></dd></dl>
 <dl><dt><a name="-setprofile"><strong>setprofile</strong></a>(...)</dt><dd><tt><a href="#-setprofile">setprofile</a>(function)<br>
&nbsp;<br>
Set&nbsp;the&nbsp;profiling&nbsp;function.&nbsp;&nbsp;It&nbsp;will&nbsp;be&nbsp;called&nbsp;on&nbsp;each&nbsp;function&nbsp;call<br>
and&nbsp;return.&nbsp;&nbsp;See&nbsp;the&nbsp;profiler&nbsp;chapter&nbsp;in&nbsp;the&nbsp;library&nbsp;manual.</tt></dd></dl>
 <dl><dt><a name="-setrecursionlimit"><strong>setrecursionlimit</strong></a>(...)</dt><dd><tt><a href="#-setrecursionlimit">setrecursionlimit</a>(n)<br>
&nbsp;<br>
Set&nbsp;the&nbsp;maximum&nbsp;depth&nbsp;of&nbsp;the&nbsp;Python&nbsp;interpreter&nbsp;stack&nbsp;to&nbsp;n.&nbsp;&nbsp;This<br>
limit&nbsp;prevents&nbsp;infinite&nbsp;recursion&nbsp;from&nbsp;causing&nbsp;an&nbsp;overflow&nbsp;of&nbsp;the&nbsp;C<br>
stack&nbsp;and&nbsp;crashing&nbsp;Python.&nbsp;&nbsp;The&nbsp;highest&nbsp;possible&nbsp;limit&nbsp;is&nbsp;platform-<br>
dependent.</tt></dd></dl>
 <dl><dt><a name="-settrace"><strong>settrace</strong></a>(...)</dt><dd><tt><a href="#-settrace">settrace</a>(function)<br>
&nbsp;<br>
Set&nbsp;the&nbsp;global&nbsp;debug&nbsp;tracing&nbsp;function.&nbsp;&nbsp;It&nbsp;will&nbsp;be&nbsp;called&nbsp;on&nbsp;each<br>
function&nbsp;call.&nbsp;&nbsp;See&nbsp;the&nbsp;debugger&nbsp;chapter&nbsp;in&nbsp;the&nbsp;library&nbsp;manual.</tt></dd></dl>
</td></tr></table><p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#55aa55">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Data</strong></big></font></td></tr>
    
<tr><td bgcolor="#55aa55"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><strong>__stderr__</strong> = &lt;open file '&lt;stderr&gt;', mode 'w' at 0x7fdbe72451c8&gt;<br>
<strong>__stdin__</strong> = &lt;open file '&lt;stdin&gt;', mode 'r' at 0x7fdbe72450b8&gt;<br>
<strong>__stdout__</strong> = &lt;open file '&lt;stdout&gt;', mode 'w' at 0x7fdbe7245140&gt;<br>
<strong>api_version</strong> = 1013<br>
<strong>argv</strong> = ['./make_doc.py']<br>
<strong>builtin_module_names</strong> = ('__builtin__', '__main__', '_ast', '_codecs', '_sre', '_symtable', '_warnings', 'errno', 'exceptions', 'gc', 'imp', 'marshal', 'posix', 'pwd', 'signal', 'sys', 'thread', 'xxsubtype', 'zipimport')<br>
<strong>byteorder</strong> = 'little'<br>
<strong>copyright</strong> = 'Copyright (c) 2001-2009 Python Software Foundati...ematisch Centrum, Amsterdam.<font color="#c040c0">\n</font>All Rights Reserved.'<br>
<strong>dont_write_bytecode</strong> = False<br>
<strong>exc_value</strong> = TypeError('arg is a built-in module',)<br>
<strong>exec_prefix</strong> = '/usr'<br>
<strong>executable</strong> = '/usr/bin/python'<br>
<strong>flags</strong> = sys.flags(debug=0, py3k_warning=0, division_warn...abcheck=0, verbose=0, unicode=0, bytes_warning=0)<br>
<strong>float_info</strong> = sys.floatinfo(max=1.7976931348623157e+308, max_e...psilon=2.2204460492503131e-16, radix=2, rounds=1)<br>
<strong>hexversion</strong> = 33948912<br>
<strong>maxint</strong> = 9223372036854775807<br>
<strong>maxsize</strong> = 9223372036854775807<br>
<strong>maxunicode</strong> = 65535<br>
<strong>meta_path</strong> = []<br>
<strong>modules</strong> = {'UserDict': &lt;module 'UserDict' from '/usr/lib/python2.6/UserDict.pyc'&gt;, '__builtin__': &lt;module '__builtin__' (built-in)&gt;, '__future__': &lt;module '__future__' from '/usr/lib/python2.6/__future__.pyc'&gt;, '__main__': &lt;module '__main__' from './make_doc.py'&gt;, '_abcoll': &lt;module '_abcoll' from '/usr/lib/python2.6/_abcoll.pyc'&gt;, '_codecs': &lt;module '_codecs' (built-in)&gt;, '_collections': &lt;module '_collections' from '/usr/lib/python2.6/lib-dynload/_collections.so'&gt;, '_curses': &lt;module '_curses' from '/usr/lib/python2.6/lib-dynload/_curses.so'&gt;, '_random': &lt;module '_random' from '/usr/lib/python2.6/lib-dynload/_random.so'&gt;, '_socket': &lt;module '_socket' from '/usr/lib/python2.6/lib-dynload/_socket.so'&gt;, ...}<br>
<strong>path</strong> = ['/home/hut/.ranger', '/home/hut/ranger', '/usr/lib/python26.zip', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old', '/usr/lib/python2.6/lib-dynload', '/usr/lib/python2.6/site-packages', '/usr/lib/python2.6/site-packages/PIL', '/usr/lib/python2.6/site-packages/gst-0.10', '/usr/lib/python2.6/site-packages/gtk-2.0', '/home/hut/.ranger']<br>
<strong>path_hooks</strong> = [&lt;type 'zipimport.zipimporter'&gt;]<br>
<strong>path_importer_cache</strong> = {'.': None, './make_doc.py': &lt;imp.NullImporter object at 0x7fdbe71e8080&gt;, '/home/hut/.ranger': None, '/home/hut/.ranger/colorschemes': None, '/home/hut/ranger': None, '/home/hut/ranger/ranger': None, '/home/hut/ranger/ranger/api': None, '/home/hut/ranger/ranger/colorschemes': None, '/home/hut/ranger/ranger/container': None, '/home/hut/ranger/ranger/defaults': None, ...}<br>
<strong>platform</strong> = 'linux2'<br>
<strong>prefix</strong> = '/usr'<br>
<strong>py3kwarning</strong> = False<br>
<strong>stderr</strong> = &lt;open file '&lt;stderr&gt;', mode 'w' at 0x7fdbe72451c8&gt;<br>
<strong>stdin</strong> = &lt;open file '&lt;stdin&gt;', mode 'r' at 0x7fdbe72450b8&gt;<br>
<strong>stdout</strong> = &lt;open file '&lt;stdout&gt;', mode 'w' at 0x7fdbe7245140&gt;<br>
<strong>subversion</strong> = ('CPython', 'tags/r264', '75706')<br>
<strong>version</strong> = '2.6.4 (r264:75706, Oct 27 2009, 06:25:13) <font color="#c040c0">\n</font>[GCC 4.4.1]'<br>
<strong>version_info</strong> = (2, 6, 4, 'final', 0)<br>
<strong>warnoptions</strong> = []</td></tr></table>
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