def determine_generator_args()

in setup.py [0:0]

• 26 lines of code
• 12 McCabe index (conditional complexity)

def determine_generator_args():
    if sys.platform == 'win32':
        try:
            # See which compiler python picks
            compiler = distutils.ccompiler.new_compiler()
            compiler.initialize()

            # Look at compiler path to divine the Visual Studio version.
            # This technique may not work with customized VS install paths.
            # An alternative would be to utilize private python calls:
            # (distutils._msvccompiler._find_vc2017() and _find_vc2015()).
            if '\\Microsoft Visual Studio\\2019' in compiler.cc:
                vs_version = 16
                vs_year = 2019
            elif '\\Microsoft Visual Studio\\2017' in compiler.cc:
                vs_version = 15
                vs_year = 2017
            elif '\\Microsoft Visual Studio 14.0' in compiler.cc:
                vs_version = 14
                vs_year = 2015
            assert(vs_version and vs_year)
        except Exception:
            raise RuntimeError('No supported version of MSVC compiler could be found!')

        print('Using Visual Studio', vs_version, vs_year)

        vs_version_gen_str = "Visual Studio {} {}".format(vs_version, vs_year)

        if vs_year <= 2017:
            # For VS2017 and earlier, architecture goes at end of generator string
            if is_64bit():
                vs_version_gen_str += " Win64"
            return ['-G', vs_version_gen_str]

        # For VS2019 (and presumably later), architecture is passed via -A flag
        arch_str = "x64" if is_64bit() else "Win32"
        return ['-G', vs_version_gen_str, '-A', arch_str]

    return []