StartResponse callbacks are required to accept and optional third argument.
Currently, there is no good way to describe this using type hints.
Previously, a Union was used, but that causes mypy to complain about any call
of start_response().
* Use Tuple field in DecimalTuple
* Remove unnecessary base classes from Decimal
* Decimal.__init__ -> __new__
* Decimal.__ne__ is not defined in Python 3
* Add Decimal.as_integer_ratio()
* Annotate DecimalException.handle()
* Correct types of Decimal method arguments
* Add missing arguments and optional markers to Decimal
* Add missing arguments to Context
* Remove spurious int from Unions with float
* Remove Context.__setattr__()
* Fix return types of Context methods
These type annotations are unnecessary and seem to confuse the type system.
* Remove annotation from PlistFormat enum members
Same rationale as python/typeshed#2314; same adverse effects observed.
To backport `os.path.commonpath` in mypy I needed to use genericpath. It seems unchanged since 3.4, and the `same*` functions were added in 3.4. (checked via comparing the `__all__`s of the source in 2.7, 3.4, and 3.7.)
* Drop support for Python 3.3
* Merge Python 2 and 3 shutil
* Marked some arguments optional
* Changed callback return type from None to Any for more flexibility
`zipfile.ZipFile` is typed to accept `Text` for local and archive file
paths. In Python 3.6, several `ZipFile` methods accept `pathlib.Path`
objects, not just `str` objects. Generalize `ZipFile`'s methods so code
using `pathlib.Path` with `ZipFile` type-checks.
I verified (using my own project) that the following methods work with
os.PurePath at runtime on CPython 3.6:
* zipfile.ZipInfo.__init__
* zipfile.ZipInfo.extractall
* zipfile.ZipInfo.write
optparse.Values is like argparse.Namespace and also has a __getattr__() method to return the parsed options.
Apply commits 54b4983 and 9ae0c0b from python/typeshed#25
```python
import fileinput
with fileinput.input(files=('foo.txt',), inplace=True, backup='') as f:
for line in f:
print(f'prefix{line}', end='')
```
```
$ mypy test2.py
test2.py:3: error: "Iterable[str]" has no attribute "__enter__"; maybe "__iter__"?
test2.py:3: error: "Iterable[str]" has no attribute "__exit__"
```
```
$ mypy test2.py --custom-typeshed typeshed
$
```
Started out as progress towards #1476, but I ended up fixing a few more things:
- fixed the signature of _encode_type, which actually returns a pair, not a string
- made some attributes into properties in order to prevent the descriptor protocol from turning them into methods
- found a bug in CPython in the process (python/cpython#6779)
I used the following test file to make sure these classes are now instantiable:
```python
import codecs
import io
from typing import IO
bio = io.BytesIO()
cod = codecs.lookup('utf-8')
codecs.StreamReaderWriter(bio, codecs.StreamReader, codecs.StreamWriter)
codecs.StreamRecoder(bio, cod.encode, cod.decode, codecs.StreamReader, codecs.StreamWriter)
```
The type signature of get_grouped_opcodes() was incorrect. Resulting in type errors when checking return values.
The usage of this function is like this:
groups = sm.get_grouped_opcodes() # groups is Iterable[List[Tuple[str, int, int, int, int]]]
for group in groups: # group is List[Tuple[str, int, int, int, int]]
for opcode in group: # opcode is Tuple[str, int, int, int, int]
