Bug report

Bug description:

You should be careful when matching unicode regexes:

>>> import sys
>>> sys.modules["_json"] = None
>>> import json
>>> json.loads("[1\uff10, 0.\uff10, 0e\uff10]")
[10, 0.0, 0.0]

I think it's safer to use [0-9] instead of \d here.

CPython versions tested on:

3.13

Operating systems tested on:

macOS

Linked PRs

• gh-125682: Python implementation of json.loads() accepts non-ascii digits #125687
• [3.13] gh-125682: Reject non-ASCII digits in the Python implementation of JSON decoder (GH-125687) #125692
• [3.12] gh-125682: Reject non-ASCII digits in the Python implementation of JSON decoder (GH-125687) #125693