clean up _functools.pyi

builtins/2.7/_functools.pyi

@@ -1,14 +1,14 @@
 """Stub file for the '_functools' module."""
-# This is an autogenerated file. It serves as a starting point
-# for a more precise manual annotation of this module.
-# Feel free to edit the source below, but remove this header when you do.
 
-from typing import Any, List, Tuple, Dict, Generic
-
-def reduce(*args, **kwargs) -> Any:
-    raise TypeError()
+from typing import Any, Callable
 
+_T = TypeVar("T")
+def reduce(function: Callable[[_T, _T], _T],
+           sequence: Iterator[_T], initial=Optional[_T]) -> _T: ...
 
 class partial(object):
-    def __reduce__(self) -> tuple: ...
-    def __setstate__(self, a, b, c, d) -> None: ...
+    func = ...  # type: Callable[..., Any]
+    args = ...  # type: Tuple[Any]
+    keywords = ...  # type: Dict[str, Any]
+    def __init__(self, func: Callable[..., Any], *args, **kwargs) -> None: ...
+    def __call__(self, *args, **kwargs) -> Any: ...