* Parse `:=` properly
* never unwrap parenthesis around `:=`
* When checking for AST-equivalence, use `ast` instead of `typed-ast` when running on python >=3.8
* Assume code that uses `:=` is at least 3.8
Modified maybe_remove_trailing_comma to remove trailing commas for
typedarglists (in addition to arglists), and updated line split logic
to ensure that all lines in a function definition that contain only one
arg have a trailing comma.
Based on the feedback in
https://github.com/python/black/pull/845#issuecomment-490622711
- Remove TokenizerConfig, and add a field to Grammar instead.
- Pass the Grammar to the tokenizer.
- Rename `ASYNC_IS_RESERVED_KEYWORD` to `ASYNC_KEYWORDS` and
`ASYNC_IS_VALID_IDENTIFIER` to `ASYNC_IDENTIFIERS`.
Fixes#593
I looked into this bug with @ambv and @carljm, and we reached the
conclusion was that it's not possible for the tokenizer to determine if
async/await is a keyword inside all possible generators without breaking
the grammar for older versions of Python.
Instead, we introduce a new tokenizer mode for Python 3.7+ that will
cause all async/await instances to get parsed as a reserved keyword,
which should fix async/await inside generators.
Closes#494
Task completion should also remove the task from `pending`.
Only replicates on some platforms. (eg. Can replicate on Python 3.7+, with either Windows or whatever default Linux distro Travis uses.)
dead code detected via [dead](https://github.com/asottile/dead)
- **`KEYWORDS`**: introduced (unreferenced) in e74117f172
- **`FLOW_CONTROL`**: last referenced in e9a940d69e
"clean" command:
```
dead --exclude '^(tests/data/|docs/conf.py|blib2to3/)' | grep -Ev '^(visit_.*|show|_stop_signal|lib2to3_unparse) '
```
* Fix multiprocessing support for Windows binary
The black and blackd binaries generated for Windows builds would fail on
reformatting multiple files due to a Windows-specific
multiprocessing issue. Fix by calling freeze_support() as
described in Python docs.
