Add urllib.response stub for Python 3.

stdlib/3/urllib/response.pyi

@@ -0,0 +1,32 @@
+from typing import Any
+
+class addbase:
+    fp = ... # type: Any
+    read = ... # type: Any
+    readline = ... # type: Any
+    readlines = ... # type: Any
+    fileno = ... # type: Any
+    __iter__ = ... # type: Any
+    next = ... # type: Any
+    def __init__(self, fp) -> None: ...
+    def close(self): ...
+
+class addclosehook(addbase):
+    closehook = ... # type: Any
+    hookargs = ... # type: Any
+    def __init__(self, fp, closehook, *hookargs) -> None: ...
+    def close(self): ...
+
+class addinfo(addbase):
+    headers = ... # type: Any
+    def __init__(self, fp, headers) -> None: ...
+    def info(self): ...
+
+class addinfourl(addbase):
+    headers = ... # type: Any
+    url = ... # type: Any
+    code = ... # type: Any
+    def __init__(self, fp, headers, url, code=...) -> None: ...
+    def info(self): ...
+    def getcode(self): ...
+    def geturl(self): ...