Support Python 3.14

[jiasli]

Python 3.14 was released on 2025-10-07 (https://devguide.python.org/versions/).

Similar to #29640, Azure CLI should add Python 3.14 support.

TODOs

• knack supports 3.14
  • Mark Python 3.14 support and drop Python 3.9 microsoft/knack#296
  • {Misc.} Fix help % token handling for Python 3.14 argparse compatibility microsoft/knack#300
  • release knack 0.14.0
  • {Packaging} Bump knack to 0.14.0 #33377
• aaz-dev supports 3.14
  • feat: add Python 3.14 support, drop Python 3.9, and refine CI workflow aaz-dev-tools#552
• azdev supports 3.14
  • Support Python 3.14 azure-cli-dev-tools#544
  • Bump pylint constraint to >=4,<5 for Python 3.14 and style compatibility azure-cli-dev-tools#547
  • {CI} Fix all style errors for pylint 4.x compatibility #33347
• Dependencies are updated to Python 3.14 compatible versions:
  • msal-extensions: {Packaging} Bump msal-extensions, portalocker, pywin32 for supporting Python 3.14 #32859
  • portalocker: {Packaging} Bump msal-extensions, portalocker, pywin32 for supporting Python 3.14 #32859
  • pywin32: {Packaging} Bump msal-extensions, portalocker, pywin32 for supporting Python 3.14 #32859
• CI passes with Python 3.14
  • {CI} Make raw request header test Accept-Encoding resilient #33316
  • {CI} Fix parser spellchecker test by setting explicit parser prog #33314
  • {Batch} Fix #33284: Fix Python 3.14 typing compatibility for batch module #33298
  • {Packaging} enable site in python._pth instead of deleting it #33419
• Extension compatible with Python 3.14
• Support Python 3.14
  • [Packaging] Bump Python version to 3.14 #33313

[yonzhan]

Thank you for opening this issue, we will look into it.

[github-actions]

Here are some similar issues that might help you. Please check if they can solve your problem.

• Support Python 3.13 #29640
• Support Python 3.12 #27673
• Support Python 3.11 #24494
• Support Python 3.10 #19857

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