* Fix werkzeug environ type
PEP 3333 explicitly calls for environ to be a built-in dict. Using a
Mapping will not only prevent the dict from being modified (which is
explicitly allowed by PEP 3333), it will also cause interaction
problems when the environment is passed to other WSGI handlers.
Also change the value type from object to Any for convenience. By
definition, the values can be anything and can't be type checked.
Using object instead of Any forces us to explicitly cast the value
whenever we access it.
* Use Union[str, unicode] for Werkzeug environment keys
This matches the type in wsgiref.types.
* Use WSGIEnvironment from wsgiref.types
* Add '= ...' to environ attribute
* Add flags to pass on --warn-unused-ignores and --no-implicit-optional to mypy
* Make implicit Optional explicit in arg types (2and3 part)
* Convert {stdlib,third_party}/2 to explicit Optional
* Update default values to `...` in `__init__` and `__new__` in `int` and `str`.
* Add `__new__` to `enum.IntEnum` to override inherited `__new__`.
* Add `type: ignore` comment to `IntEnum`
- Updates documentation related to previously required comment headers.
- Removes all comment headers from stubs
- Occasionally included a header for stubs that were noted to be incomplete or contained todo's.
* Allow None in concurrent.futures.exception() and set_exception()
* Make Executor.map() signature more precise
* Remove superfluous signatures
* Specify str type for some concurrent.futures constants
* Update concurrent.futures backport
* CR fixes
* Add missing methods to Python 2 concurrent.futures
Future.exception_info() and Future.set_exception_info() are methods
present only in the Python 2 backport of concurrent.futures.
* Mark timeout args as optional
CONTRIBUTING.md says to prefer ... Not the most impactful change but fixing
these will allow us to lint for it in the future and get a consistent style.
third_party/2/concurrent/futures is for the Python 2 backport of the
concurrent.futures package from Python 3. In Python 3, all exceptions
are derived from BaseException, but Python 2 also supports exceptions
that are old-style objects (which don't derive from BaseException).
Switch from BaseException to Any to allow old-style exceptions.
All old-style objects are instances of types.InstanceType, so an
alternative to Any is Union[BaseException, types.InstanceType]. This
would help avoid accidentally passing a non-BaseException new-style
object to Future.set_exception(). However, only Executors call that
function (usually), and it's not clear that mypy understands old-style
objects and their relationship to types.InstanceType, so Any is
thought to be the more practical choice.
Mypy now supports metaclasses in Python 2, see python/mypy#2830
so that now __metaclass__ attribute has special treatment.
This PR makes small changes to fix the build (also most PRs are red because of this)
The concurrent.futures.Future class's set_exception() method might be
called with a BaseException that is not an Exception, so change
set_exception()'s parameter type from Exception to BaseException. The
exception set via set_exception() is returned by exception(), so
change exception()'s return type from Exception to BaseException.
I believe this covers both #647 and #719.
Moved sqlalchemy stubs from 2 to 2and3;
changed sqlalchemy/util/compat.pyi:37 to be of type typing.Text;
added incomplete stubs for sqlalchemy.orm.utils and slqalchemy.sql.elements.ColumnElement.
