Version parsing error in packaging 22.0

[WillChen789]

Hello, I recently observed some unexpected behavior with packaging 22.0 where version.parse will throw an exception when multiple comma-separated version numbers are provided to the function.

To repro:

from packaging.version import parse
print(parse('0.10.1,<0.11'))

Executing this with packaging 21.3 will return the expected output:

0.10.1,<0.11

Whereas executing this with packaging 22.0 will throw an InvalidVersion exception:

InvalidVersion: Invalid version: '0.10.1,

Was this an intended change? For context, please see transformers for a live example where this is relevant: https://github.com/huggingface/transformers/blob/main/src/transformers/dependency_versions_table.py

Thank you for your attention regarding this issue.

[uranusjr]

The string you provide is indeed invalid, not raising an exception is a bug. I’d say this is a good fix.

[pradyunsg]

This is intentional, and explicitly rejecting a string that is not a version (in packaging.version.parse) is indeed an intended change.

[pradyunsg]

See #321 and #530 for the details.