Add memoryview class for python 2.7 (#493)

stdlib/2.7/__builtin__.pyi

@@ -8,7 +8,7 @@ from typing import (
     Sequence, Mapping, Tuple, List, Any, Dict, Callable, Generic, Set,
     AbstractSet, Sized, Reversible, SupportsInt, SupportsFloat, SupportsAbs,
     SupportsRound, IO, BinaryIO, Union, AnyStr, MutableSequence, MutableMapping,
-    MutableSet, ItemsView, KeysView, ValuesView
+    MutableSet, ItemsView, KeysView, ValuesView, Optional, Container,
 )
 from abc import abstractmethod, ABCMeta
 
@@ -705,7 +705,6 @@ def map(func: Callable[[_T1, _T2], _S],
 def max(arg1: _T, arg2: _T, *args: _T, key: Callable[[_T], Any] = None) -> _T: ...
 @overload
 def max(iterable: Iterable[_T], key: Callable[[_T], Any] = None) -> _T: ...
-# TODO memoryview
 @overload
 def min(arg1: _T, arg2: _T, *args: _T, key: Callable[[_T], Any] = None) -> _T: ...
 @overload
@@ -801,6 +800,36 @@ class buffer(Sized):
     def __len__(self) -> int: ...
     def __mul__(self, x: int) -> str: ...
 
+class memoryview(Sized, Container[bytes]):
+    format = ... # type: str
+    itemsize = ... # type: int
+    shape = ... # type: Optional[Tuple[int, ...]]
+    strides = ... # type: Optional[Tuple[int, ...]]
+    suboffsets = ... # type: Optional[Tuple[int, ...]]
+    readonly = ... # type: bool
+    ndim = ... # type: int
+
+    def __init__(self, obj: Union[str, bytearray, buffer, memoryview]) -> None: ...
+
+    @overload
+    def __getitem__(self, i: int) -> bytes: ...
+    @overload
+    def __getitem__(self, s: slice) -> memoryview: ...
+
+    def __contains__(self, x: object) -> bool: ...
+    def __iter__(self) -> Iterator[bytes]: ...
+    def __len__(self) -> int: ...
+
+    @overload
+    def __setitem__(self, i: int, o: bytes) -> None: ...
+    @overload
+    def __setitem__(self, s: slice, o: Sequence[bytes]) -> None: ...
+    @overload
+    def __setitem__(self, s: slice, o: memoryview) -> None: ...
+
+    def tobytes(self) -> bytes: ...
+    def tolist(self) -> List[int]: ...
+
 class BaseException:
     args = ...  # type: Any
     message = ...  # type: str