In python 3, add an overload for there being no digits argument
and make it return int.
In python 2, __round__ doesn't exist and SupportsRound doesn't exist
in the typing module. Use SupportsFloat for python 2 round().
Remove decimal's __round__ overload that takes None, since it doesn't exist
PR #2833 introduced more flexible handling for the type of the default
parameter, but the extra type variable caused some issues. Add another
overload for the case where there is no default param.
This is I think related to the issues we have had with `get` recently?
This is technically wrong. The documentation states that:
"Note that None may be returned if no handler handles the request
(though the default installed global OpenerDirector uses
UnknownHandler to ensure this never happens)."
This is super marginal and making it optional causes a few dozen
errors in an internal dropbox code base.
PR #2516 aimed to widen the accepted file argument to json.dump, but
since `IO` is invariant in its argument, it actually disallowed
passing binary files.
The __new__ method should suffice, and having both interferes with providing
a __new__ in namedtuples, which we want to do to fix
https://github.com/python/mypy/issues/1279.
`@trait` has special meaning to the experimental mypyc compiler,
slightly restricting the behavior of the class in exchange for
allowing it to be multiply inherited from.
add_argument's type argument was recently changed to be (approximately)
`Callable[[_Text], _T]`. Because of contravariant subtyping for functions,
this had the effect of requiring that add_argument *always*
be unicode, which is wrong.
Change it to be `Callable[[str], _T]`.
* Make {C,WIN,PY}FUNCTYPE's restype argument optional (for void returns)
* Make WinError return WindowsError
* Don't have Array explicitly inherit from Sized
(since inheriting from classes with different metaclasses causes problems,
and it is a protocol anyways)
* Have Array.__iter__ properly return an Iterator instead of an Iterable
Michael J. Sullivan