Example of C program calling Python script

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# Include <python2.7/Python. h> Int main (){ PyObject * g_pModule = NULL; Py_Initialize (); // before using python, you need to call Py_Initialize (); this function is initialized. If (! Py_IsInitialized ()) { Printf ("init errorn "); Return-1; } PyRun_SimpleString ("import sys "); PyRun_SimpleString ("sys. path. append ('./')"); G_pModule = PyImport_ImportModule ("test"); // The name of the file to be called. Here we are test. py in the current directory. If (! G_pModule ){ Printf ("Cant open python file! N "); Return-2; } PyObject * test1 = PyObject_GetAttrString (g_pModule, "test1"); // The name of the function to be called. PyObject * objResult = PyObject_CallFunction (test1, "I, s", 2, e); // call a function If (! ObjResult ){ Printf ("invoke function failn "); }   PyObject * test2 = PyObject_GetAttrString (g_pModule, "test2"); // The name of the function to be called. ObjResult = PyObject_CallFunction (test2, "I", 2); // call a function Char * x = PyString_AsString (objResult ); Printf ("% sn", x ); Py_Finalize (); // call Py_Finalize, which corresponds to Py_Initialize. }

Python program test. py

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Def test1 (s, str ): Print s + str Return 0 Def test2 (s ): Return s

C program compilation method

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# If We install python in/opt/python during compilation, we can use this command to compile the program. $ Gcc-I/opt/python/include-L/opt/python/lib/-lpython2.7 test. c

Note: To compile python, you must add the -- enable-shared library to the dynamic link library.

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./Configure -- prefix =/opt/python -- enable-shared