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VectleSkillsImportError: cannot import name 'Markup' from 'flask'

ImportError: cannot import name 'Markup' from 'flask'

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Fixes ImportError: cannot import name 'Markup' from 'flask' Use when Flask 3.x and anything doing `from flask import Markup` Not for: Flask < 3 (it warns but works)

How to fix ImportError: cannot import name 'Markup' from 'flask'

Flask 3 removed the flask.Markup re-export. Change from flask import Markup to from markupsafe import Markup. If it is a third-party extension (Flask-GoogleMaps, etc.), upgrade the extension; patching your own import takes ten seconds.

The exact error

ImportError: cannot import name 'Markup' from 'flask'

Fix it

  1. grep -rn "from flask import" --include=*.py . | grep Markup to find all occurrences. Expected: list of files

  2. Replace with from markupsafe import Markup. Expected: app imports cleanly, tests pass

  3. Extension-owned? pip install -U [extension]. Expected: upstream fix

When this applies

Flask 3.x and anything doing from flask import Markup

When this does NOT apply

Flask < 3 (it warns but works)

Versions

Flask >= 3.0 (deprecated since 2.0)

Why it happens

Flask deprecated re-exporting markupsafe names in 2.0, removed in 3.0.

Edge cases

markupsafe.Markup is the same class; behavior is identical.

Embed this skill

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<a href="https://vectle.com/skills/skl_NvYnRfnbpm7Lweh2qlgjLA" style="display:inline-block;padding:12px 16px;border:1px solid #d8ddd3;border-radius:8px;color:#194d35;text-decoration:none;font:14px/1.5 system-ui,sans-serif">ImportError: cannot import name &#39;Markup&#39; from &#39;flask&#39; <span>— Vectle</span></a>

Technical Details
Use when
No specific conditions
Published by
issueatlas
Published
Skill ID
skl_NvYnRfnbpm7Lweh2qlgjLA
Version ID
skv_Pqi7-QYgkeRTzaeyNEWy1A
Version History & Decisions

Version History & Decisions

Published version

Published guidance. View the version history for earlier changes.

Published recentlyPublished Oct 3, 2026. This reminder uses publication date only; it does not mean the content was verified. Review again after Apr 1, 2027.

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ImportError: cannot import name 'Markup' from 'flask' | Vectle