setupenv_windows.py 文件源码

def main():
    parser = optparse.OptionParser()
    parser.add_option('-d', '--download-dir',
        help='Directory with maually downloaded python modules.'
    )
    opts, _ = parser.parse_args()

    # Install packages.
    for k, v in _PACKAGES.items():
        # Test python version for module.
        if k in _PY_VERSION:
            # Python version too old, skip module.
            if PYVER < _PY_VERSION[k]:
                continue
        try:
            __import__(k)
            print('Already installed...', k)
        # Module is not available - install it.
        except ImportError:
            # If not url or module name then look for installers in download area.
            if not v[0].startswith('http') and v[0].endswith('exe'):
                files = []
                # Try all file patterns.
                for pattern in v:
                    pattern = os.path.join(opts.download_dir, pattern)
                    files += glob.glob(pattern)
                # No file with that pattern was not found - skip it.
                if not files:
                    print('Skipping module...', k)
                    continue
                # Full path to installers in download directory.
                v = files
            print('Installing module...', k)
            # Some modules might require several .exe files to install.
            for f in v:
                print(' ', f)
                # Use --no-deps ... installing module dependencies might fail
                # because easy_install tries to install the same module from
                # PYPI from source code and if fails because of C code that
                # that needs to be compiled.
                try:
                    easy_install.main(['--no-deps', '--always-unzip', f])
                except Exception:
                    print(' ', k, 'installation failed')