Demo of compiling a small C dynamic library in a Python script and directly loading it with ctypes.

compile_c_inline.py

import ctypes
import tempfile
import distutils.ccompiler
from pathlib import Path

from random import randint

SOURCE_CODE = f"""
int roll(void) {{
    return {randint(1, 6)};
}}
"""

def compile_link_and_load(source_code):
    with tempfile.TemporaryDirectory() as tempdir_name:
        tempdir = Path(tempdir_name)
        source_file = tempdir / 'fairdice.c'
        source_file.write_text(source_code, encoding='UTF-8')

        cc = distutils.ccompiler.new_compiler()
        object_files = cc.compile([str(source_file)], tempdir_name, extra_preargs=['-fPIC'])
        cc.link_shared_lib(object_files, tempdir / 'fairdice')

        return ctypes.CDLL(tempdir / 'libfairdice.so')    


def main():
    libfairdice = compile_link_and_load(SOURCE_CODE)
    print(libfairdice.roll())

main()