bpo-40939: Remove PEG parser easter egg by lysnikolaou · Pull Request #20802 · python/cpython

lysnikolaou

There seem to still be some leftovers present:

$ docker run -i -t python:3.9-rc /usr/local/bin/python
Python 3.9.0rc1 (default, Aug 12 2020, 18:31:30) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import keyword
>>> keyword.iskeyword("__peg_parser__")
True
>>> assert "__peg_parser__" not in keyword.kwlist
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AssertionError