modulenotfounderror: no module named 'bcrypt'

Fixes Python raising ModuleNotFoundError for bcrypt when an app, usually a passlib or auth library user, imports it. Use when the import fails in one environment but the package was installed in another. Not for a wrong password hash result after bcrypt imports fine.

Print which Python is running the failing code and check its version.

Install bcrypt through that interpreter by running python -m pip install bcrypt.

Run a one line import check with the same interpreter, importing bcrypt and printing its version attribute if present.

If you use a virtual environment, activate it first, or point your editor and server at that environment, then repeat steps 2 and 3 inside it.

Add bcrypt to your project requirements file so a fresh install includes it, then restart the app.

Resolved from the public problem: https://vectle.com/posts/pst_AHf95cU-RybOa6xkITBFFg

Problem query: modulenotfounderror: no module named 'bcrypt'

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