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Merge issue #16370: Mention Py_SetProgramName in example for very high level embedding.

This commit is contained in:
Andrew Svetlov 2012-10-31 16:03:44 +02:00
parent f9c7c3641b e1fa22a8ae
commit 694f9ce343
1 changed files with 13 additions and 8 deletions
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21
Doc/extending/embedding.rst
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@ -58,6 +58,7 @@ perform some operation on a file. ::
int
main(int argc, char *argv[])
{
Py_SetProgramName(argv[0]); /* optional but recommended */
Py_Initialize();
PyRun_SimpleString("from time import time,ctime\n"
"print('Today is', ctime(time()))\n");
@ -65,14 +66,18 @@ perform some operation on a file. ::
return 0;
}
The above code first initializes the Python interpreter with
:c:func:`Py_Initialize`, followed by the execution of a hard-coded Python script
that print the date and time. Afterwards, the :c:func:`Py_Finalize` call shuts
the interpreter down, followed by the end of the program. In a real program,
you may want to get the Python script from another source, perhaps a text-editor
routine, a file, or a database. Getting the Python code from a file can better
be done by using the :c:func:`PyRun_SimpleFile` function, which saves you the
trouble of allocating memory space and loading the file contents.
Function :c:func:`Py_SetProgramName` should be called before
:c:func:`Py_Initialize` to inform the interpreter about paths to
Python run-time libraries. Next initialize the Python interpreter
with :c:func:`Py_Initialize`, followed by the execution of a
hard-coded Python script that prints the date and time. Afterwards,
the :c:func:`Py_Finalize` call shuts the interpreter down, followed by
the end of the program. In a real program, you may want to get the
Python script from another source, perhaps a text-editor routine, a
file, or a database. Getting the Python code from a file can better
be done by using the :c:func:`PyRun_SimpleFile` function, which saves
you the trouble of allocating memory space and loading the file
contents.
.. _lower-level-embedding: