Bug report

Bug description:

Django is tested with the earliest alpha versions. We noticed a behavior change in theurllib.parse.urljoin() that is used in a few places in Django, e.g. for staticfiles or build-in storages.

Python 3.14.0a1:

>>>fromurllib.parseimporturljoin>>>urljoin("/static/","admin/img/icon-addlink.svg")admin/img/icon-addlink.svg

Python 3.13 and earlier:

>>>fromurllib.parseimporturljoin>>>urljoin("/static/","admin/img/icon-addlink.svg")/static/admin/img/icon-addlink.svg

Is this an intentional change?

CPython versions tested on:

3.14

Operating systems tested on:

Linux

Linked PRs

• gh-125926: Fix urllib.parse.urljoin() for base URI with undefined authority #125989