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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>The Very High Level Layer — Python 2.7.5 documentation</title> <link rel="stylesheet" href="../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../', VERSION: '2.7.5', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/sidebar.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python 2.7.5 documentation" href="../_static/opensearch.xml"/> <link rel="author" title="About these documents" href="../about.html" /> <link rel="copyright" title="Copyright" href="../copyright.html" /> <link rel="top" title="Python 2.7.5 documentation" href="../index.html" /> <link rel="up" title="Python/C API Reference Manual" href="index.html" /> <link rel="next" title="Reference Counting" href="refcounting.html" /> <link rel="prev" title="Introduction" href="intro.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <script type="text/javascript" src="../_static/copybutton.js"></script> </head> <body> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="refcounting.html" title="Reference Counting" accesskey="N">next</a> |</li> <li class="right" > <a href="intro.html" title="Introduction" accesskey="P">previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="http://www.python.org/">Python</a> »</li> <li> <a href="../index.html">Python 2.7.5 documentation</a> » </li> <li><a href="index.html" accesskey="U">Python/C API Reference Manual</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <div class="section" id="the-very-high-level-layer"> <span id="veryhigh"></span><h1>The Very High Level Layer<a class="headerlink" href="#the-very-high-level-layer" title="Permalink to this headline">¶</a></h1> <p>The functions in this chapter will let you execute Python source code given in a file or a buffer, but they will not let you interact in a more detailed way with the interpreter.</p> <p>Several of these functions accept a start symbol from the grammar as a parameter. The available start symbols are <tt class="xref py py-const docutils literal"><span class="pre">Py_eval_input</span></tt>, <tt class="xref py py-const docutils literal"><span class="pre">Py_file_input</span></tt>, and <tt class="xref py py-const docutils literal"><span class="pre">Py_single_input</span></tt>. These are described following the functions which accept them as parameters.</p> <p>Note also that several of these functions take <tt class="xref c c-type docutils literal"><span class="pre">FILE*</span></tt> parameters. One particular issue which needs to be handled carefully is that the <tt class="xref c c-type docutils literal"><span class="pre">FILE</span></tt> structure for different C libraries can be different and incompatible. Under Windows (at least), it is possible for dynamically linked extensions to actually use different libraries, so care should be taken that <tt class="xref c c-type docutils literal"><span class="pre">FILE*</span></tt> parameters are only passed to these functions if it is certain that they were created by the same library that the Python runtime is using.</p> <dl class="function"> <dt id="Py_Main"> int <tt class="descname">Py_Main</tt><big>(</big>int<em> argc</em>, char<em> **argv</em><big>)</big><a class="headerlink" href="#Py_Main" title="Permalink to this definition">¶</a></dt> <dd><p>The main program for the standard interpreter. This is made available for programs which embed Python. The <em>argc</em> and <em>argv</em> parameters should be prepared exactly as those which are passed to a C program’s <tt class="xref c c-func docutils literal"><span class="pre">main()</span></tt> function. It is important to note that the argument list may be modified (but the contents of the strings pointed to by the argument list are not). The return value will be <tt class="docutils literal"><span class="pre">0</span></tt> if the interpreter exits normally (ie, without an exception), <tt class="docutils literal"><span class="pre">1</span></tt> if the interpreter exits due to an exception, or <tt class="docutils literal"><span class="pre">2</span></tt> if the parameter list does not represent a valid Python command line.</p> <p>Note that if an otherwise unhandled <a class="reference internal" href="../library/exceptions.html#exceptions.SystemExit" title="exceptions.SystemExit"><tt class="xref py py-exc docutils literal"><span class="pre">SystemExit</span></tt></a> is raised, this function will not return <tt class="docutils literal"><span class="pre">1</span></tt>, but exit the process, as long as <tt class="docutils literal"><span class="pre">Py_InspectFlag</span></tt> is not set.</p> </dd></dl> <dl class="function"> <dt id="PyRun_AnyFile"> int <tt class="descname">PyRun_AnyFile</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em><big>)</big><a class="headerlink" href="#PyRun_AnyFile" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyRun_AnyFileExFlags" title="PyRun_AnyFileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_AnyFileExFlags()</span></tt></a> below, leaving <em>closeit</em> set to <tt class="docutils literal"><span class="pre">0</span></tt> and <em>flags</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_AnyFileFlags"> int <tt class="descname">PyRun_AnyFileFlags</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_AnyFileFlags" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyRun_AnyFileExFlags" title="PyRun_AnyFileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_AnyFileExFlags()</span></tt></a> below, leaving the <em>closeit</em> argument set to <tt class="docutils literal"><span class="pre">0</span></tt>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_AnyFileEx"> int <tt class="descname">PyRun_AnyFileEx</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> closeit</em><big>)</big><a class="headerlink" href="#PyRun_AnyFileEx" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyRun_AnyFileExFlags" title="PyRun_AnyFileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_AnyFileExFlags()</span></tt></a> below, leaving the <em>flags</em> argument set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_AnyFileExFlags"> int <tt class="descname">PyRun_AnyFileExFlags</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> closeit</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_AnyFileExFlags" title="Permalink to this definition">¶</a></dt> <dd><p>If <em>fp</em> refers to a file associated with an interactive device (console or terminal input or Unix pseudo-terminal), return the value of <a class="reference internal" href="#PyRun_InteractiveLoop" title="PyRun_InteractiveLoop"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_InteractiveLoop()</span></tt></a>, otherwise return the result of <a class="reference internal" href="#PyRun_SimpleFile" title="PyRun_SimpleFile"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_SimpleFile()</span></tt></a>. If <em>filename</em> is <em>NULL</em>, this function uses <tt class="docutils literal"><span class="pre">"???"</span></tt> as the filename.</p> </dd></dl> <dl class="function"> <dt id="PyRun_SimpleString"> int <tt class="descname">PyRun_SimpleString</tt><big>(</big>const char<em> *command</em><big>)</big><a class="headerlink" href="#PyRun_SimpleString" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyRun_SimpleStringFlags" title="PyRun_SimpleStringFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_SimpleStringFlags()</span></tt></a> below, leaving the <em>PyCompilerFlags*</em> argument set to NULL.</p> </dd></dl> <dl class="function"> <dt id="PyRun_SimpleStringFlags"> int <tt class="descname">PyRun_SimpleStringFlags</tt><big>(</big>const char<em> *command</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_SimpleStringFlags" title="Permalink to this definition">¶</a></dt> <dd><p>Executes the Python source code from <em>command</em> in the <a class="reference internal" href="../library/__main__.html#module-__main__" title="__main__: The environment where the top-level script is run."><tt class="xref py py-mod docutils literal"><span class="pre">__main__</span></tt></a> module according to the <em>flags</em> argument. If <a class="reference internal" href="../library/__main__.html#module-__main__" title="__main__: The environment where the top-level script is run."><tt class="xref py py-mod docutils literal"><span class="pre">__main__</span></tt></a> does not already exist, it is created. Returns <tt class="docutils literal"><span class="pre">0</span></tt> on success or <tt class="docutils literal"><span class="pre">-1</span></tt> if an exception was raised. If there was an error, there is no way to get the exception information. For the meaning of <em>flags</em>, see below.</p> <p>Note that if an otherwise unhandled <a class="reference internal" href="../library/exceptions.html#exceptions.SystemExit" title="exceptions.SystemExit"><tt class="xref py py-exc docutils literal"><span class="pre">SystemExit</span></tt></a> is raised, this function will not return <tt class="docutils literal"><span class="pre">-1</span></tt>, but exit the process, as long as <tt class="docutils literal"><span class="pre">Py_InspectFlag</span></tt> is not set.</p> </dd></dl> <dl class="function"> <dt id="PyRun_SimpleFile"> int <tt class="descname">PyRun_SimpleFile</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em><big>)</big><a class="headerlink" href="#PyRun_SimpleFile" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyRun_SimpleFileExFlags" title="PyRun_SimpleFileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_SimpleFileExFlags()</span></tt></a> below, leaving <em>closeit</em> set to <tt class="docutils literal"><span class="pre">0</span></tt> and <em>flags</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_SimpleFileFlags"> int <tt class="descname">PyRun_SimpleFileFlags</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_SimpleFileFlags" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyRun_SimpleFileExFlags" title="PyRun_SimpleFileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_SimpleFileExFlags()</span></tt></a> below, leaving <em>closeit</em> set to <tt class="docutils literal"><span class="pre">0</span></tt>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_SimpleFileEx"> int <tt class="descname">PyRun_SimpleFileEx</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> closeit</em><big>)</big><a class="headerlink" href="#PyRun_SimpleFileEx" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyRun_SimpleFileExFlags" title="PyRun_SimpleFileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_SimpleFileExFlags()</span></tt></a> below, leaving <em>flags</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_SimpleFileExFlags"> int <tt class="descname">PyRun_SimpleFileExFlags</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> closeit</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_SimpleFileExFlags" title="Permalink to this definition">¶</a></dt> <dd><p>Similar to <a class="reference internal" href="#PyRun_SimpleStringFlags" title="PyRun_SimpleStringFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_SimpleStringFlags()</span></tt></a>, but the Python source code is read from <em>fp</em> instead of an in-memory string. <em>filename</em> should be the name of the file. If <em>closeit</em> is true, the file is closed before PyRun_SimpleFileExFlags returns.</p> </dd></dl> <dl class="function"> <dt id="PyRun_InteractiveOne"> int <tt class="descname">PyRun_InteractiveOne</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em><big>)</big><a class="headerlink" href="#PyRun_InteractiveOne" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyRun_InteractiveOneFlags" title="PyRun_InteractiveOneFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_InteractiveOneFlags()</span></tt></a> below, leaving <em>flags</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_InteractiveOneFlags"> int <tt class="descname">PyRun_InteractiveOneFlags</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_InteractiveOneFlags" title="Permalink to this definition">¶</a></dt> <dd><p>Read and execute a single statement from a file associated with an interactive device according to the <em>flags</em> argument. The user will be prompted using <tt class="docutils literal"><span class="pre">sys.ps1</span></tt> and <tt class="docutils literal"><span class="pre">sys.ps2</span></tt>. Returns <tt class="docutils literal"><span class="pre">0</span></tt> when the input was executed successfully, <tt class="docutils literal"><span class="pre">-1</span></tt> if there was an exception, or an error code from the <tt class="file docutils literal"><span class="pre">errcode.h</span></tt> include file distributed as part of Python if there was a parse error. (Note that <tt class="file docutils literal"><span class="pre">errcode.h</span></tt> is not included by <tt class="file docutils literal"><span class="pre">Python.h</span></tt>, so must be included specifically if needed.)</p> </dd></dl> <dl class="function"> <dt id="PyRun_InteractiveLoop"> int <tt class="descname">PyRun_InteractiveLoop</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em><big>)</big><a class="headerlink" href="#PyRun_InteractiveLoop" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyRun_InteractiveLoopFlags" title="PyRun_InteractiveLoopFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_InteractiveLoopFlags()</span></tt></a> below, leaving <em>flags</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_InteractiveLoopFlags"> int <tt class="descname">PyRun_InteractiveLoopFlags</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_InteractiveLoopFlags" title="Permalink to this definition">¶</a></dt> <dd><p>Read and execute statements from a file associated with an interactive device until EOF is reached. The user will be prompted using <tt class="docutils literal"><span class="pre">sys.ps1</span></tt> and <tt class="docutils literal"><span class="pre">sys.ps2</span></tt>. Returns <tt class="docutils literal"><span class="pre">0</span></tt> at EOF.</p> </dd></dl> <dl class="function"> <dt id="PyParser_SimpleParseString"> struct _node* <tt class="descname">PyParser_SimpleParseString</tt><big>(</big>const char<em> *str</em>, int<em> start</em><big>)</big><a class="headerlink" href="#PyParser_SimpleParseString" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyParser_SimpleParseStringFlagsFilename" title="PyParser_SimpleParseStringFlagsFilename"><tt class="xref c c-func docutils literal"><span class="pre">PyParser_SimpleParseStringFlagsFilename()</span></tt></a> below, leaving <em>filename</em> set to <em>NULL</em> and <em>flags</em> set to <tt class="docutils literal"><span class="pre">0</span></tt>.</p> </dd></dl> <dl class="function"> <dt id="PyParser_SimpleParseStringFlags"> struct _node* <tt class="descname">PyParser_SimpleParseStringFlags</tt><big>(</big>const char<em> *str</em>, int<em> start</em>, int<em> flags</em><big>)</big><a class="headerlink" href="#PyParser_SimpleParseStringFlags" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyParser_SimpleParseStringFlagsFilename" title="PyParser_SimpleParseStringFlagsFilename"><tt class="xref c c-func docutils literal"><span class="pre">PyParser_SimpleParseStringFlagsFilename()</span></tt></a> below, leaving <em>filename</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyParser_SimpleParseStringFlagsFilename"> struct _node* <tt class="descname">PyParser_SimpleParseStringFlagsFilename</tt><big>(</big>const char<em> *str</em>, const char<em> *filename</em>, int<em> start</em>, int<em> flags</em><big>)</big><a class="headerlink" href="#PyParser_SimpleParseStringFlagsFilename" title="Permalink to this definition">¶</a></dt> <dd><p>Parse Python source code from <em>str</em> using the start token <em>start</em> according to the <em>flags</em> argument. The result can be used to create a code object which can be evaluated efficiently. This is useful if a code fragment must be evaluated many times.</p> </dd></dl> <dl class="function"> <dt id="PyParser_SimpleParseFile"> struct _node* <tt class="descname">PyParser_SimpleParseFile</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> start</em><big>)</big><a class="headerlink" href="#PyParser_SimpleParseFile" title="Permalink to this definition">¶</a></dt> <dd><p>This is a simplified interface to <a class="reference internal" href="#PyParser_SimpleParseFileFlags" title="PyParser_SimpleParseFileFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyParser_SimpleParseFileFlags()</span></tt></a> below, leaving <em>flags</em> set to <tt class="docutils literal"><span class="pre">0</span></tt></p> </dd></dl> <dl class="function"> <dt id="PyParser_SimpleParseFileFlags"> struct _node* <tt class="descname">PyParser_SimpleParseFileFlags</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> start</em>, int<em> flags</em><big>)</big><a class="headerlink" href="#PyParser_SimpleParseFileFlags" title="Permalink to this definition">¶</a></dt> <dd><p>Similar to <a class="reference internal" href="#PyParser_SimpleParseStringFlagsFilename" title="PyParser_SimpleParseStringFlagsFilename"><tt class="xref c c-func docutils literal"><span class="pre">PyParser_SimpleParseStringFlagsFilename()</span></tt></a>, but the Python source code is read from <em>fp</em> instead of an in-memory string.</p> </dd></dl> <dl class="function"> <dt id="PyRun_String"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyRun_String</tt><big>(</big>const char<em> *str</em>, int<em> start</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *globals</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *locals</em><big>)</big><a class="headerlink" href="#PyRun_String" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>This is a simplified interface to <a class="reference internal" href="#PyRun_StringFlags" title="PyRun_StringFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_StringFlags()</span></tt></a> below, leaving <em>flags</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_StringFlags"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyRun_StringFlags</tt><big>(</big>const char<em> *str</em>, int<em> start</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *globals</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *locals</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_StringFlags" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Execute Python source code from <em>str</em> in the context specified by the dictionaries <em>globals</em> and <em>locals</em> with the compiler flags specified by <em>flags</em>. The parameter <em>start</em> specifies the start token that should be used to parse the source code.</p> <p>Returns the result of executing the code as a Python object, or <em>NULL</em> if an exception was raised.</p> </dd></dl> <dl class="function"> <dt id="PyRun_File"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyRun_File</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> start</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *globals</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *locals</em><big>)</big><a class="headerlink" href="#PyRun_File" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>This is a simplified interface to <a class="reference internal" href="#PyRun_FileExFlags" title="PyRun_FileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_FileExFlags()</span></tt></a> below, leaving <em>closeit</em> set to <tt class="docutils literal"><span class="pre">0</span></tt> and <em>flags</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_FileEx"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyRun_FileEx</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> start</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *globals</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *locals</em>, int<em> closeit</em><big>)</big><a class="headerlink" href="#PyRun_FileEx" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>This is a simplified interface to <a class="reference internal" href="#PyRun_FileExFlags" title="PyRun_FileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_FileExFlags()</span></tt></a> below, leaving <em>flags</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_FileFlags"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyRun_FileFlags</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> start</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *globals</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *locals</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_FileFlags" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>This is a simplified interface to <a class="reference internal" href="#PyRun_FileExFlags" title="PyRun_FileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_FileExFlags()</span></tt></a> below, leaving <em>closeit</em> set to <tt class="docutils literal"><span class="pre">0</span></tt>.</p> </dd></dl> <dl class="function"> <dt id="PyRun_FileExFlags"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyRun_FileExFlags</tt><big>(</big>FILE<em> *fp</em>, const char<em> *filename</em>, int<em> start</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *globals</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *locals</em>, int<em> closeit</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#PyRun_FileExFlags" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Similar to <a class="reference internal" href="#PyRun_StringFlags" title="PyRun_StringFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_StringFlags()</span></tt></a>, but the Python source code is read from <em>fp</em> instead of an in-memory string. <em>filename</em> should be the name of the file. If <em>closeit</em> is true, the file is closed before <a class="reference internal" href="#PyRun_FileExFlags" title="PyRun_FileExFlags"><tt class="xref c c-func docutils literal"><span class="pre">PyRun_FileExFlags()</span></tt></a> returns.</p> </dd></dl> <dl class="function"> <dt id="Py_CompileString"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">Py_CompileString</tt><big>(</big>const char<em> *str</em>, const char<em> *filename</em>, int<em> start</em><big>)</big><a class="headerlink" href="#Py_CompileString" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>This is a simplified interface to <a class="reference internal" href="#Py_CompileStringFlags" title="Py_CompileStringFlags"><tt class="xref c c-func docutils literal"><span class="pre">Py_CompileStringFlags()</span></tt></a> below, leaving <em>flags</em> set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="Py_CompileStringFlags"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">Py_CompileStringFlags</tt><big>(</big>const char<em> *str</em>, const char<em> *filename</em>, int<em> start</em>, <a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *flags</em><big>)</big><a class="headerlink" href="#Py_CompileStringFlags" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Parse and compile the Python source code in <em>str</em>, returning the resulting code object. The start token is given by <em>start</em>; this can be used to constrain the code which can be compiled and should be <tt class="xref py py-const docutils literal"><span class="pre">Py_eval_input</span></tt>, <tt class="xref py py-const docutils literal"><span class="pre">Py_file_input</span></tt>, or <tt class="xref py py-const docutils literal"><span class="pre">Py_single_input</span></tt>. The filename specified by <em>filename</em> is used to construct the code object and may appear in tracebacks or <a class="reference internal" href="../library/exceptions.html#exceptions.SyntaxError" title="exceptions.SyntaxError"><tt class="xref py py-exc docutils literal"><span class="pre">SyntaxError</span></tt></a> exception messages. This returns <em>NULL</em> if the code cannot be parsed or compiled.</p> </dd></dl> <dl class="function"> <dt id="PyEval_EvalCode"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyEval_EvalCode</tt><big>(</big><a class="reference internal" href="code.html#PyCodeObject" title="PyCodeObject">PyCodeObject</a><em> *co</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *globals</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *locals</em><big>)</big><a class="headerlink" href="#PyEval_EvalCode" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>This is a simplified interface to <a class="reference internal" href="#PyEval_EvalCodeEx" title="PyEval_EvalCodeEx"><tt class="xref c c-func docutils literal"><span class="pre">PyEval_EvalCodeEx()</span></tt></a>, with just the code object, and the dictionaries of global and local variables. The other arguments are set to <em>NULL</em>.</p> </dd></dl> <dl class="function"> <dt id="PyEval_EvalCodeEx"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyEval_EvalCodeEx</tt><big>(</big><a class="reference internal" href="code.html#PyCodeObject" title="PyCodeObject">PyCodeObject</a><em> *co</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *globals</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *locals</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> **args</em>, int<em> argcount</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> **kws</em>, int<em> kwcount</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> **defs</em>, int<em> defcount</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em> *closure</em><big>)</big><a class="headerlink" href="#PyEval_EvalCodeEx" title="Permalink to this definition">¶</a></dt> <dd><p>Evaluate a precompiled code object, given a particular environment for its evaluation. This environment consists of dictionaries of global and local variables, arrays of arguments, keywords and defaults, and a closure tuple of cells.</p> </dd></dl> <dl class="function"> <dt id="PyEval_EvalFrame"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyEval_EvalFrame</tt><big>(</big>PyFrameObject<em> *f</em><big>)</big><a class="headerlink" href="#PyEval_EvalFrame" title="Permalink to this definition">¶</a></dt> <dd><p>Evaluate an execution frame. This is a simplified interface to PyEval_EvalFrameEx, for backward compatibility.</p> </dd></dl> <dl class="function"> <dt id="PyEval_EvalFrameEx"> <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PyEval_EvalFrameEx</tt><big>(</big>PyFrameObject<em> *f</em>, int<em> throwflag</em><big>)</big><a class="headerlink" href="#PyEval_EvalFrameEx" title="Permalink to this definition">¶</a></dt> <dd><p>This is the main, unvarnished function of Python interpretation. It is literally 2000 lines long. The code object associated with the execution frame <em>f</em> is executed, interpreting bytecode and executing calls as needed. The additional <em>throwflag</em> parameter can mostly be ignored - if true, then it causes an exception to immediately be thrown; this is used for the <tt class="xref py py-meth docutils literal"><span class="pre">throw()</span></tt> methods of generator objects.</p> </dd></dl> <dl class="function"> <dt id="PyEval_MergeCompilerFlags"> int <tt class="descname">PyEval_MergeCompilerFlags</tt><big>(</big><a class="reference internal" href="#PyCompilerFlags" title="PyCompilerFlags">PyCompilerFlags</a><em> *cf</em><big>)</big><a class="headerlink" href="#PyEval_MergeCompilerFlags" title="Permalink to this definition">¶</a></dt> <dd><p>This function changes the flags of the current evaluation frame, and returns true on success, false on failure.</p> </dd></dl> <dl class="var"> <dt id="Py_eval_input"> int <tt class="descname">Py_eval_input</tt><a class="headerlink" href="#Py_eval_input" title="Permalink to this definition">¶</a></dt> <dd><p id="index-0">The start symbol from the Python grammar for isolated expressions; for use with <a class="reference internal" href="#Py_CompileString" title="Py_CompileString"><tt class="xref c c-func docutils literal"><span class="pre">Py_CompileString()</span></tt></a>.</p> </dd></dl> <dl class="var"> <dt id="Py_file_input"> int <tt class="descname">Py_file_input</tt><a class="headerlink" href="#Py_file_input" title="Permalink to this definition">¶</a></dt> <dd><p id="index-1">The start symbol from the Python grammar for sequences of statements as read from a file or other source; for use with <a class="reference internal" href="#Py_CompileString" title="Py_CompileString"><tt class="xref c c-func docutils literal"><span class="pre">Py_CompileString()</span></tt></a>. This is the symbol to use when compiling arbitrarily long Python source code.</p> </dd></dl> <dl class="var"> <dt id="Py_single_input"> int <tt class="descname">Py_single_input</tt><a class="headerlink" href="#Py_single_input" title="Permalink to this definition">¶</a></dt> <dd><p id="index-2">The start symbol from the Python grammar for a single statement; for use with <a class="reference internal" href="#Py_CompileString" title="Py_CompileString"><tt class="xref c c-func docutils literal"><span class="pre">Py_CompileString()</span></tt></a>. This is the symbol used for the interactive interpreter loop.</p> </dd></dl> <dl class="type"> <dt id="PyCompilerFlags"> struct <tt class="descname">PyCompilerFlags</tt><a class="headerlink" href="#PyCompilerFlags" title="Permalink to this definition">¶</a></dt> <dd><p>This is the structure used to hold compiler flags. In cases where code is only being compiled, it is passed as <tt class="docutils literal"><span class="pre">int</span> <span class="pre">flags</span></tt>, and in cases where code is being executed, it is passed as <tt class="docutils literal"><span class="pre">PyCompilerFlags</span> <span class="pre">*flags</span></tt>. In this case, <tt class="docutils literal"><span class="pre">from</span> <span class="pre">__future__</span> <span class="pre">import</span></tt> can modify <em>flags</em>.</p> <p>Whenever <tt class="docutils literal"><span class="pre">PyCompilerFlags</span> <span class="pre">*flags</span></tt> is <em>NULL</em>, <tt class="xref py py-attr docutils literal"><span class="pre">cf_flags</span></tt> is treated as equal to <tt class="docutils literal"><span class="pre">0</span></tt>, and any modification due to <tt class="docutils literal"><span class="pre">from</span> <span class="pre">__future__</span> <span class="pre">import</span></tt> is discarded.</p> <div class="highlight-c"><div class="highlight"><pre><span class="k">struct</span> <span class="n">PyCompilerFlags</span> <span class="p">{</span> <span class="kt">int</span> <span class="n">cf_flags</span><span class="p">;</span> <span class="p">}</span> </pre></div> </div> </dd></dl> <dl class="var"> <dt id="CO_FUTURE_DIVISION"> int <tt class="descname">CO_FUTURE_DIVISION</tt><a class="headerlink" href="#CO_FUTURE_DIVISION" title="Permalink to this definition">¶</a></dt> <dd><p>This bit can be set in <em>flags</em> to cause division operator <tt class="docutils literal"><span class="pre">/</span></tt> to be interpreted as “true division” according to <span class="target" id="index-3"></span><a class="pep reference external" href="http://www.python.org/dev/peps/pep-0238"><strong>PEP 238</strong></a>.</p> </dd></dl> </div> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="intro.html" title="previous chapter">Introduction</a></p> <h4>Next topic</h4> <p class="topless"><a href="refcounting.html" title="next chapter">Reference Counting</a></p> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../bugs.html">Report a Bug</a></li> <li><a href="../_sources/c-api/veryhigh.txt" rel="nofollow">Show Source</a></li> </ul> <div id="searchbox" style="display: none"> <h3>Quick search</h3> <form class="search" action="../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="clearer"></div> </div> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="refcounting.html" title="Reference Counting" >next</a> |</li> <li class="right" > <a href="intro.html" title="Introduction" >previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="http://www.python.org/">Python</a> »</li> <li> <a href="../index.html">Python 2.7.5 documentation</a> » </li> <li><a href="index.html" >Python/C API Reference Manual</a> »</li> </ul> </div> <div class="footer"> © <a href="../copyright.html">Copyright</a> 1990-2019, Python Software Foundation. <br /> The Python Software Foundation is a non-profit corporation. <a href="http://www.python.org/psf/donations/">Please donate.</a> <br /> Last updated on Jul 03, 2019. <a href="../bugs.html">Found a bug</a>? <br /> Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 1.1.3. </div> </body> </html>
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