python / python/cpython

IDLE colorizer - Properly highlight function/class names

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stdlib topic-IDLE type-feature
Dominant language
Python
Stars
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Forks
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PR merge metrics
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Description

Bug report

Bug description:
def 4545(): # “4545” highlighted correctly
               # because identifiers cannot
               # start with digits

being highlighted:

How it should render

Image

How it renders instead

Image

class MID·DOT(): 

How it should render

Image

How it renders instead

Image
“·” (U+00B7) is a XID_Continue character

CPython versions tested on:

3.15, 3.14, 3.13, 3.9, 3.10, 3.11, 3.12

Operating systems tested on:

Windows

Linked PRs
  • gh-137612

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Review the IDLE colorizer behavior described in the two examples and inspect linked PR gh-137612 before starting. Confirm that the function and class names in the issue render as shown in the expected screenshots, including the U+00B7 case, on the listed CPython versions.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
desktop
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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