如何在不位于其目录中的情况下运行 setup.py 文件？

Question

To install a package that includes a setup.py file, usually you cd into the root directory where setup.py is located and then run the following:

python setup.py install

Now my problem is that I'm building an addon for another application, and while I can install "normal" package via code with the following:

subprocess.run([sys.executable, "-m", "pip", "install", package])

I also have to install a couple custom made packages, and if I try to do it like this:

subprocess.run([sys.executable, "-m", "/MSN-Point-Cloud-Completion-master/emd/setup.py", "install"])

I get the following error: Error while finding module specification for 'MSN-Point-Cloud-Completion-master/emd/setup.py' (ModuleNotFoundError: No module named 'MSN-Point-Cloud-Completion-master/emd/setup')

What is annoying me is that if I manually cd into the directory and simply run python setup.py install from the cmd it works just fine.

So the problem seems to be passing the relative path to the setup.py file, but as I said, considering this is an addon I need to install that setup.py from code. Any solution?

Answer 1

Reading comments made me realize a few mistakes.

First of all I realized that I shouldn't use -m flag in this case and this allow me to execute setup.py correctly. Also deleted the extra slash in the path and now the following works:

subprocess.run([sys.executable, "MSN-Point-Cloud-Completion-master/emd/setup.py", "install"])

However, since I wasn't in that directory still, I also got the following error c1xx: fatal error C1083: It is not possible to open file: 'emd_cuda.cu': No such file or directory and the compilation failed.

This definitely fixed all the problems:

import os
import subprocess

os.chdir("MSN-Point-Cloud-Completion-master/emd/")
subprocess.run([sys.executable, "setup.py", "install"])