code: def main():
      with open("README.md") as f:
          long_description = f.read()
  
      setuptools.setup(
          name="moolib",
          version="0.2.0",
          description=(
              "A library for distributed ML training with PyTorch"
          ),
          long_description=long_description,
          long_description_content_type="text/markdown",
          author="tscmoo & the moolib dev team",
          url="https://github.com/facebookresearch/moolib",
          classifiers=[
              "Programming Language :: C++",
              "Programming Language :: Python :: 3",
              "License :: OSI Approved :: MIT License",
              "Operating System :: POSIX :: Linux",
              "Operating System :: MacOS :: MacOS X",
              "Environment :: GPU :: NVIDIA CUDA",
          ],
          packages=[
              "moolib",
              "moolib.examples.common",
              "moolib.examples.vtrace",
          ],
          package_dir={"": "py", "moolib.examples": "examples"},
          ext_modules=[setuptools.Extension("moolib._C", sources=[])],
          install_requires=["torch>=1.6.0"],
          cmdclass={"build_ext": CMakeBuild},
          zip_safe=False,
      )
  
file_path: moolib/setup.py
imports: import os
  import pathlib
  import subprocess
  import sys
  import setuptools
  from setuptools.command import build_ext
  from distutils import spawn
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types