Find out how to use a python function in a C module

In this tutorial, we will explore how to use a Python function in a C module. This can be useful when you want to optimize performance-critical parts of your Python code by implementing them in C. We'll use Python's C API to accomplish this, and we'll provide code examples to illustrate the process.
Before you start, ensure that you have the following:
Start by creating a Python module that contains the function you want to use in your C module. For this example, let's create a Python module called mypythonmodule.py with a simple function:
Now, we'll create a C module that will call the add function from our Python module. Here's a simple C module named mycmodule.c:
To compile the C module, open a terminal and run the following command:
Replace /path/to/python with the actual path to your Python installation and X.Y with your Python version (e.g., 3.8).
This command will compile your C module and generate a shared library file named mycmodule.so.
Create a Python script to test the C module. Let's create a file named test_mycmodule.py:
Run the Python script:
You should see the following output:
This output confirms that the C module successfully called the Python function.
In this tutorial, we learned how to use a Python function in a C module. This can be helpful when you need to improve the performance of specific parts of your Python code. By following these steps, you can create C modules that interact with Python functions seamlessly.
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