A reference to an existing Python callable must be passed in order to use this function. There are many ways to do this, such as — just write C code to extract a symbol from an existing module or pass a callable to a plugin.
Code # 1: Simple Embedding Example
To build this final example, C needs to be compiled and linked with a Python interpreter. Below is a code snippet showing how to do this (this is something that might take some effort on your computer):
Code # 2:
Compiling and running the resulting executable gives output as:
0.00 0.00 0.10 0.01 0.20 0.04 0.30 0.09 0.40 0.16 ...
Below is another example, provided by the code below which shows an extension function that receives a callable and some arguments and sends them to
call_func() for testing purposes.
Code # 3:
Code # 4: Testing the extension function
we had a Python object representing the callable object to be called. It can be a function, class, method, inline method, or anything that implements
__call__() . To check if it is a callable function, use
Code # 5: Function check
PyObject_Call() to call the function, providing it with a callable, a tuple of arguments, and an optional dictionary of keyword arguments.
Py_BuildValue() can be used to create an argument tuple or dictionary.
Code # 6:
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