Description

sobolevn

opened on Jun 12, 2025

Issue body actions

Bug report

In #134036 (PR: #134077) I broke this use-case:

# ex.py
raise AssertionError() from None

print(1,,2)

Running ./python.exe ex.py on it produces:

» ./python.exe ex.py
  File "/Users/sobolev/Desktop/cpython/ex.py", line 1
    raise AssertionError() from None
                           ^^^^
SyntaxError: did you forget an expression after 'from'?

Which is not correct. I am fixing it right now, sorry! :(

CC @pablogsal @lysnikolaou

Linked PRs

• gh-135422: Fix regression in SyntaxError messages after #134036 #135423

Reacted by Mikhail Efimov

Activity

1. sobolevn

   self-assigned this

   on Jun 12, 2025
2. sobolevn

   added

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

   release-blocker

   topic-parser

   on Jun 12, 2025
3. ezio-melotti

   added this to Release and Deferred blockers 🚫on Jun 12, 2025
4. github-project-automation

   moved this to Todo in Release and Deferred blockers 🚫on Jun 12, 2025
5. sobolevn

   added a commit that references this issue on Jun 12, 2025

   pythongh-135422: Fix regression in `SyntaxError` messages after pytho…

   0d94e64
6. sobolevn

   added

   3.15bugs and security fixesbugs and security fixes

   and removed

   release-blocker

   on Jun 12, 2025
7. sobolevn commented on Jun 12, 2025

   

   sobolevn

   on Jun 12, 2025

   MemberAuthor

   More actions

   This did not make it to 3.14, so I removed the release-blocker label. Only 3.15 is affected.
8. picnixz

   changed the title [-]Invalid error messages after #134036[/-] [+]Invalid error messages after GH-134036[/+] on Jun 14, 2025
9. picnixz commented on Jun 14, 2025

   

   picnixz

   on Jun 14, 2025 · Hidden as outdated

   show commentMore actions
10. picnixz

    changed the title [-]Invalid error messages after GH-134036[/-] [+]Invalid error messages after GH-134077[/+] on Jun 14, 2025
11. picnixz

    removed this from Release and Deferred blockers 🚫on Jun 14, 2025
12. sobolevn

    added a commit that references this issue on Jun 30, 2025

    gh-135422: Fix regression in `SyntaxError` messages after #134036 (#1…

    7e33558
13. sobolevn commented on Jun 30, 2025

    

    sobolevn

    on Jun 30, 2025

    MemberAuthor

    More actions

    Thanks everyone, done!
14. sobolevn

    closed this as completedon Jun 30, 2025
15. AndPuQing

    added a commit that references this issue on Jul 11, 2025

    pythongh-135422: Fix regression in `SyntaxError` messages after pytho…

    88c9480
16. Pranjal095

    added a commit that references this issue on Jul 12, 2025

    pythongh-135422: Fix regression in `SyntaxError` messages after pytho…

    27a5841
17. picnixz

    added a commit that references this issue on Jul 13, 2025

    pythongh-135422: Fix regression in `SyntaxError` messages after pytho…

    24a2572
18. taegyunkim

    added a commit that references this issue on Aug 4, 2025

    pythongh-135422: Fix regression in `SyntaxError` messages after pytho…

    94599d6
19. Agent-Hellboy

    added a commit that references this issue on Aug 19, 2025

    pythongh-135422: Fix regression in `SyntaxError` messages after pytho…

    2c13c88

Issue actions