Calling a c++ file from Python

Question

I have a Python code and, after running all the stuff in it, I want it to simply run a c++ file I have in the same directory. I read about Cython and BoostPython, but I don't think it is what I need (I could be wrong, obviously). I don't want to call functions, simply run the c++ algorithm. Is there an easy way to do it?

Do you need to share data between python and the c++ program? — snek_case
– snek_case, Commented Jan 20, 2020 at 18:43
when you say "c++ file" do you mean a source file or an executable? — 463035818_is_not_an_ai
– 463035818_is_not_an_ai, Commented Jan 20, 2020 at 18:53
You will need to compile (translate) the Source C++ file into an executable before you can run it. You can have Python run a compiler and specify your program (along with other command line parameters), then have Python run the executable program. An alternative is to find or create an interpreter for C++. — Thomas Matthews
– Thomas Matthews, Commented Jan 20, 2020 at 19:27

Doron Shevach · Accepted Answer · 2020-01-20 18:45:47Z

6

You can try open it as a subprocess in your script like this:

import subprocess
subprocess.call(["g++", "hello_world.cpp"])
tmp=subprocess.call("./a.out")
print("printing result")
print(tmp)

answered Jan 20, 2020 at 18:45

Doron Shevach

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