I got the argument order from
https://github.com/python/cpython/blob/2bfc2dc214445550521074f428245b502d215eac/Objects/codeobject.c#L263
and the types from the attributes already in the stub.

* Add `copy()` method to requests.Session.headers

* Use one type annotation

* StrictRedis is an alias for Redis in current redis

* Add a few types

* Add missing import

* Add missing argument and types

Fixes #3052

Fixes #3026

The marshal.dumps and marshal.loads functions should return and accept
bytes, respectively, rather than a string.

…3039)

This includes two things to sync up with recent runtime updates:
* Move `Final`, `@final`, `Literal`, and `TypedDict` to `typing` (`typing_extensions` still defines or re-exports them)
* Rename `@typing.runtime` to `@typing.runtime_checkable`, while keeping `@runtime` as a backwards-compatible alias in `typing_extensions`.

The Pull Request #1121 added the `AddressFamily` type to `socket.pyi`
for Python 3.4+, so constants such as `AF_INET` are correctly
represented as being an enum member rather than an int. The same is
true of the `SocketKind` enums in the `SOCK_*` family.

Various functions in the socket module can accept either an int
or an `AF_*` enum member as arguments, which is allowed by the
int argument type. However the `getaddrinfo` function returns an
`AddressFamily` member rather than an int in the first position
of its list members, so code that access enum specific members
such as the `name` attribute causes a typing error to be found.

This change corrects the return type of `getaddrinfo` but leaves
the family parameters as int, given that `AddressFamily` members
are `IntEnum` and only ever treated as `int`s internally.

Morsel does cast any value to string and therfor any is the correct
typehint. For some keys other types then strings are more
appropiate anyway, max-age can take an integer (unix time) and http-only
a boolean.

Closes #3059

* Add types and functions in types.py that are new in 3.7

* Update `resolve_bases` to accept any iterable of objects, and the same
for `new_class` if the version is at least 3.7

* Add comparison overrides implemented by MethodWrapperType

* Fix mypy error due to over-constrained `__eq__`

…3078)

Closes #3076

…s own class (#2878)" (#3077)

This reverts commit e45f443.

…3085)

Both are None if there were no groups matched. Also 'lastgroup'
will be None if the matched group was nameless.

The Python 2 versions of these annotations already used Optional.

…n 2.7 (#3086)

)

On Python 2, a str is returned, however on Python 3 the return type
is bytes.

Modified __add__ method in tuple class to allow it to accept tuples with different generic parameter types. This allows, for example:
a = (1, )
b = a + (2.4, )

Stems from PR #1550/ Issue #3243.

Part of #3267. Together with #3276 this should fix all such problems.

… fields (#3285)

…3294)

This was discussed in #3181 and the correct explanation was given that
object ought to be preferred here. In practice this caused an obscure
issue with mypy when using this operations on the results of
six.viewkeys(), since it decided that it wanted a mapping *from* object
as a result of inference contexts. Grumble.

PR #3269 added some version checks for the argument type to setLevel
and the existence of NullHandler. While these features weren't present
in early versions of Python 3, they *are* present in Python 2.7, which
leads to false positives.

This is important because mypy doesn't generally think functions are compatible with `FunctionType`, so `inspect.getsource` on arbitrary functions is rejected by the current annotations.

…vate_key. (#3296)

The only extant implementation of generate_private_key returns this more specialized interface.

Fixes: #3201

Closes #3301

The cryptography stubs are very rudimentary at the moment, but there
is nothing that limits them to just Python 2.

Closes: #3303

* In Python 2, the optional `msg` argument was missing.
* In Python 3, the method was missing altogether.

Reference:
https://github.com/python/cpython/blob/2.7/Lib/_pyio.py#L423
https://github.com/python/cpython/blob/3.6/Lib/_pyio.py#L443

Fixes: #3289

The decode method of IncrementalNewlineDecoder accepts a string when its decoder is None.

Fixes: #3289

Closes: #3313