delta/cpython-git.git/Lib/lib2to3, branch fix-traceback-syntax-error

bpo-40360: Deprecate lib2to3 module in light of PEP 617 (GH-19663)

2020-04-24T18:19:46+00:00

Deprecate lib2to3 module in light of PEP 617.

We anticipate removal in the 3.12 timeframe.

lib2to3: Support named assignment expressions (GH-12702)

2020-04-02T22:34:54+00:00

There are two copies of the grammar -- the one used by Python itself as
Grammar/Grammar, and the one used by lib2to3 which has necessarily diverged at
Lib/lib2to3/Grammar.txt because it needs to support older syntax an we want it
to be reasonable stable to avoid requiring fixer rewrites.

This brings suport for syntax like `if x:= foo():` to match what the live
Python grammar does.

This should've been added at the time of the walrus operator itself, but lib2to3 being
independent is often overlooked.  So we do consider this a bugfix rather than enhancement.

bpo-38080: Added "getproxies" to urllib fixes in the 2to3 tool (GH-16167)

2020-03-11T23:51:20+00:00

bpo-38641: Add lib2to3 support for starred expressions in return/yield statements (GH-16994)

2020-03-01T19:59:26+00:00

bpo-39313: Add an option to RefactoringTool for using exec as a function (GH-17967)

2020-01-12T22:13:31+00:00

https://bugs.python.org/issue39313


Automerge-Triggered-By: @pablogsal

bpo-38871: Fix lib2to3 for filter-based statements that contain lambda (GH-17780)

2020-01-07T17:30:54+00:00

Correctly parenthesize filter-based statements that contain lambda
expressions in lib2to3.

Remove binding of captured exceptions when not used to reduce the chances of creating cycles (GH-17246)

2019-11-19T21:34:03+00:00

Capturing exceptions into names can lead to reference cycles though the __traceback__ attribute of the exceptions in some obscure cases that have been reported previously and fixed individually. As these variables are not used anyway, we can remove the binding to reduce the chances of creating reference cycles.

See for example GH-13135

bpo-33348: parse expressions after * and ** in lib2to3 (GH-6586)

2019-10-24T06:19:07+00:00

These are valid even in python 2.7


https://bugs.python.org/issue33348



Automerge-Triggered-By: @gpshead

Fix typos in comments, docs and test names (#15018)

2019-07-30T22:16:13+00:00

* Fix typos in comments, docs and test names

* Update test_pyparse.py

account for change in string length

* Apply suggestion: splitable -> splittable

Co-Authored-By: Terry Jan Reedy 

* Apply suggestion: splitable -> splittable

Co-Authored-By: Terry Jan Reedy 

* Apply suggestion: Dealloccte -> Deallocate

Co-Authored-By: Terry Jan Reedy 

* Update posixmodule checksum.

* Reverse idlelib changes.

closes bpo-37675: Use pkgutil.iter_modules to find fixers in a package rather than listdir. (14942)

2019-07-24T23:38:50+00:00