urllib2: timeout: int -> Optional[float] (python#2685)

Author: pmhahn

stdlib/2/urllib2.pyi

@@ -47,10 +47,10 @@ class Request(object):
 
 class OpenerDirector(object):
     def add_handler(self, handler: BaseHandler) -> None: ...
-    def open(self, url: Union[Request, _string], data: Optional[_string] = ..., timeout: int = ...): ...
+    def open(self, url: Union[Request, _string], data: Optional[_string] = ..., timeout: Optional[float] = ...): ...
     def error(self, proto: _string, *args: Any): ...
 
-def urlopen(url: Union[Request, _string], data: Optional[_string] = ..., timeout: int = ...,
+def urlopen(url: Union[Request, _string], data: Optional[_string] = ..., timeout: Optional[float] = ...,
             cafile: Optional[_string] = ..., capath: Optional[_string] = ..., cadefault: bool = ...,
             context: Optional[ssl.SSLContext] = ...): ...
 def install_opener(opener: OpenerDirector) -> None: ...
@@ -161,7 +161,7 @@ class FTPHandler(BaseHandler):
 
 class CacheFTPHandler(FTPHandler):
     def __init__(self) -> None: ...
-    def setTimeout(self, t): ...
+    def setTimeout(self, t: Optional[float]): ...
     def setMaxConns(self, m): ...
     def check_cache(self): ...
     def clear_cache(self): ...