* Add public missing asyncio stubs for windows and proactor files, and any necessary private return/argument types.
* Add methods to BaseProactorEventLoop that mypy is complaining about, with note about status at runtime
* Add asyncio constants file
* Make multiprocessing stubs match implementation
* Add multiprocessing.process.BaseProcess
* Use BaseProcess in multiprocessing.context where applicable
* Remove non-existing BaseContext.Process()
* Derive DefaultContext from BaseContext
* Fix BaseContext/DefaultContext.set_start_method() signatures
* Re-export multiprocessing.context.Process from multiprocessing,
instead of using a custom definition
* Re-export multiprocessing.active_from from multiprocessing.process
instead of using a custom definition
* Add parent_process() (Python 3.8)
* Complete BaseManager; add Server
* Add multiprocessing.shared_memory et al
* Add os.add_dll_directory()
* Add memfd_create() and flags
* Add type annotation to flags
* Add stat_result.st_reparse_tag and flags
* Add ncurses_version
* Add Path.link_to()
* Add Picker.reducer_override()
* Add plistlib.UID
* Add has_dualstack_ipv6() and create_server()
* Add shlex.join()
* Add SSL methods and fields
* Add Python 3.8 statistics functions and classes
* Remove obsolete sys.subversion
* Add sys.unraisablehook
* Add threading.excepthook
* Add get_native_id() and Thread.native_id
* Add Python 3.8 tkinter methods
* Add CLOCK_UPTIME_RAW
* Add SupportsIndex
* Add typing.get_origin() and get_args()
* Add unicodedata.is_normalized
* Add unittest.mock.AsyncMock
Currently this is just an alias for Any like Mock and MagicMock. All of
these classes should probably be sub-classing Any and add their own
methods. See also #3224.
* Add unittest cleanup methods
* Add IsolatedAsyncioTestCase
* Add ElementTree.canonicalize() and C14NWriterTarget
* cProfile.Profile can be used as a context manager
* Add asyncio task name handling
* mmap.flush() now always returns None
* Add posonlyargcount to CodeType
While it may eventually be useful to mark the exceptions that can be
raised from a function or method, the semantics are currently undefined
and unclear.
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.
Nothing prevents a decorator defined using `@decorator` from
changing the signature of the decorated function. For example,
this example changes the return type to `str`:
```
from decorator import decorator
@decorator
def stringify(f, *args, **kwargs) -> str:
return str(f(*args, **kwargs))
```
The old signature caused false positives in internal Dropbox code.
I couldn't come up with a signature that would produce better types
with mypy while not generating false positives.
