bpo-45759: Re: Better error messages for non-matching 'elif'/'else' statements

[thatbirdguythatuknownot]

Repeated pull request with a different branch of the fork. Original pull request link -> #29513

https://bugs.python.org/issue45759

[thatbirdguythatuknownot]

This pull request was made as a workaround to the conflict in Parser/parser.c without git.

[github-actions]

This PR is stale because it has been open for 30 days with no activity.

[MaxwellDupre]

You have make 67284 changes to parser.c, can you say why its like this rather than usual additions, deletions?

[AlexWaygood]

You have make 67284 changes to parser.c, can you say why its like this rather than usual additions, deletions?

parser.c is an autogenerated file. The number of lines changed in parser.c is not relevant to anything.

[thatbirdguythatuknownot]

You have make 67284 changes to parser.c, can you say why its like this rather than usual additions, deletions?

@MaxwellDupre It's an autogenerated file, you can also see this in other minor grammar changes.

[MaxwellDupre]

Ah, right of course, VS code showed me a confusing view of differences, but Git showed the correct one.

I have tried to compile and got:
Traceback (most recent call last):
File "/home/me/Documents/GitHub/cpython/./Tools/scripts/deepfreeze.py", line 1, in
import argparse
^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/argparse.py", line 89, in
import re as _re
^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/re/init.py", line 125, in
from . import _compiler, _parser
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/re/_compiler.py", line 18, in
assert _sre.MAGIC == MAGIC, "SRE module mismatch"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: SRE module mismatch
...
make: *** [Makefile:1106: Python/deepfreeze/site.c] Error 1
make: *** [Makefile:1079: Python/deepfreeze/abc.c] Error 1
make: *** [Makefile:1100: Python/deepfreeze/posixpath.c] Error 1
make: *** [Makefile:1085: Python/deepfreeze/io.c] Error 1
make: *** [Makefile:1097: Python/deepfreeze/ntpath.c] Error 1
make: *** [Makefile:1112: Python/deepfreeze/hello.c] Error 1
make: *** [Makefile:1115: Python/deepfreeze/phello.c] Error 1
...
AssertionError: SRE module mismatch
make: *** [Makefile:1121: Python/deepfreeze/phello.ham.eggs.c] Error 1
make: *** [Makefile:1118: Python/deepfreeze/phello.ham.c] Error 1
make: *** [Makefile:1124: Python/deepfreeze/phello.spam.c] Error 1
Traceback (most recent call last):
File "/home/me/Documents/GitHub/cpython/./Tools/scripts/deepfreeze.py", line 1, in
import argparse
^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/argparse.py", line 89, in
import re as _re
^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/re/init.py", line 125, in
from . import _compiler, _parser
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/re/_compiler.py", line 18, in
assert _sre.MAGIC == MAGIC, "SRE module mismatch"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: SRE module mismatch
make: *** [Makefile:1127: Python/deepfreeze/frozen_only.c] Error 1

---

Then tried:
!  ~/D/G/cpython   patch-10 $  make regen-pegen
PYTHONPATH=./Tools/peg_generator python3.11 -m pegen -q c
./Grammar/python.gram
./Grammar/Tokens
-o ./Parser/parser.new.c
Traceback (most recent call last):
File "", line 198, in _run_module_as_main
File "", line 88, in _run_code
File "/home/me/Documents/GitHub/cpython/Tools/peg_generator/pegen/main.py", line 8, in
import argparse
^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/argparse.py", line 89, in
import re as _re
^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/re/init.py", line 125, in
from . import _compiler, _parser
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/re/_compiler.py", line 18, in
assert _sre.MAGIC == MAGIC, "SRE module mismatch"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: SRE module mismatch
make: *** [Makefile:1353: regen-pegen] Error 1

---

I note that none of the build bots have run.

---

I am using Fedora 5.18.5-200.fc36.x86_64 and
./configure --with-pydebug
make -s -j

[thatbirdguythatuknownot]

Other PR (#29513) got merged.