req_install.py 文件源码

def get_dist(self):
        """Return a pkg_resources.Distribution built from self.egg_info_path"""
        egg_info = self.egg_info_path('').rstrip('/')
        base_dir = os.path.dirname(egg_info)
        metadata = pkg_resources.PathMetadata(base_dir, egg_info)
        dist_name = os.path.splitext(os.path.basename(egg_info))[0]
        return pkg_resources.Distribution(
            os.path.dirname(egg_info),
            project_name=dist_name,
            metadata=metadata)