install_egg_info.py 文件源码

def run(self):
        self.run_command('egg_info')
        if os.path.isdir(self.target) and not os.path.islink(self.target):
            dir_util.remove_tree(self.target, dry_run=self.dry_run)
        elif os.path.exists(self.target):
            self.execute(os.unlink, (self.target,), "Removing " + self.target)
        if not self.dry_run:
            pkg_resources.ensure_directory(self.target)
        self.execute(
            self.copytree, (), "Copying %s to %s" % (self.source, self.target)
        )
        self.install_namespaces()