2.2.0 breaks werkzeug.routing.ValidationError import

[itamarst]

(venv-test) $ pip install werkzeug
Collecting werkzeug
  Downloading Werkzeug-2.2.0-py3-none-any.whl (232 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 232.2/232.2 KB 3.5 MB/s eta 0:00:00
Collecting MarkupSafe>=2.1.1
  Using cached MarkupSafe-2.1.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (25 kB)
Installing collected packages: MarkupSafe, werkzeug
Successfully installed MarkupSafe-2.1.1 werkzeug-2.2.0
(venv-test) $ python
Python 3.10.4 (main, Jun 29 2022, 12:14:53) [GCC 11.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from werkzeug.routing import ValidationError
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name 'ValidationError' from 'werkzeug.routing' (/tmp/venv-test/lib/python3.10/site-packages/werkzeug/routing/__init__.py)

This is a documented API for 2.2, e.g. https://werkzeug.palletsprojects.com/en/2.2.x/routing/#custom-converters example code.

Environment:

• Python version: 3.10
• Werkzeug version: 2.2.0

[davidism]

Missed this one when we refactored to split into submodules.