pkg_resources.py 文件源码

def run_script(self,script_name,namespace):
        script = 'scripts/'+script_name
        if not self.has_metadata(script):
            raise ResolutionError("No script named %r" % script_name)
        script_text = self.get_metadata(script).replace('\r\n','\n')
        script_text = script_text.replace('\r','\n')
        script_filename = self._fn(self.egg_info,script)
        namespace['__file__'] = script_filename
        if os.path.exists(script_filename):
            execfile(script_filename, namespace, namespace)
        else:
            from linecache import cache
            cache[script_filename] = (
                len(script_text), 0, script_text.split('\n'), script_filename
            )
            script_code = compile(script_text,script_filename,'exec')
            exec(script_code, namespace, namespace)