compat.py 文件源码

def get_signature(func):
            sig = inspect.signature(func)
            pk = inspect._ParameterKind
            has_var_args = any(p.kind == pk.VAR_POSITIONAL for p in sig.parameters.values())
            has_var_kwds = any(p.kind == pk.VAR_KEYWORD for p in sig.parameters.values())
            all_keyword_params = [param_name for param_name, param in sig.parameters.items()
                                  if param.kind in (pk.POSITIONAL_OR_KEYWORD, pk.KEYWORD_ONLY)]
            default_params = [param_name for param_name, param in sig.parameters.items()
                                  if param.kind in (pk.POSITIONAL_OR_KEYWORD, pk.KEYWORD_ONLY) and param.default != inspect._empty]
            return _Signature(all_keyword_params, default_params, has_var_args, has_var_kwds)