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Add Optional[] for all remaining cases of x: <type> = None (#1424)

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* Final round of adding Optional[] to type of arguments with default = None
* Update Travis to use --no-implicit-optionals and clarify CONTRIBUTING.md
This commit is contained in:
Guido van Rossum
2017-06-21 10:50:21 -07:00
committed by Matthias Kramm
parent 81f77b17ec
commit 350563223f
18 changed files with 152 additions and 133 deletions
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8
stdlib/3/io.pyi
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@@ -106,8 +106,8 @@ class BytesIO(BinaryIO):
def __iter__(self) -> Iterator[bytes]: ...
def __next__(self) -> bytes: ...
def __enter__(self) -> 'BytesIO': ...
def __exit__(self, t: type = None, value: BaseException = None,
traceback: Any = None) -> bool: ...
def __exit__(self, t: Optional[type] = None, value: Optional[BaseException] = None,
traceback: Optional[Any] = None) -> bool: ...
def close(self) -> None: ...
def fileno(self) -> int: ...
def flush(self) -> None: ...
@@ -210,8 +210,8 @@ class TextIOWrapper(TextIO):
write_through: bool = ...
) -> None: ...
# copied from IOBase
def __exit__(self, t: type = None, value: BaseException = None,
traceback: Any = None) -> bool: ...
def __exit__(self, t: Optional[type] = None, value: Optional[BaseException] = None,
traceback: Optional[Any] = None) -> bool: ...
def close(self) -> None: ...
def fileno(self) -> int: ...
def flush(self) -> None: ...