ModuleNotFoundError: No module named 'fabric'

TL;DR: Fabric is not installed for the Python running your code. Run python -m pip install fabric with the same interpreter, and the import works.

ModuleNotFoundError: No module named 'fabric'

Fix it

1. Install: python -m pip install fabric. Expected: Successfully installed fabric.
2. Verify: python -c "import fabric; print(fabric.version)". Expected: 2.x or 3.x.
3. If it still fails, check for a second Python: which python and python -m pip --version must agree. Expected: same paths.
4. Add fabric to requirements.txt.

When this applies

• import fabric fails with ModuleNotFoundError.

When it doesn't

• The import works but fabric.api fails: that is the Fabric 2 rewrite, different skill.
• fab CLI not found: the scripts dir is not on PATH; check pip show -f fabric.

Compatibility

• fabric 2.x/3.x; Python 3.8+.

Why it happens

Fresh venvs and containers start empty; Fabric's install is not implied by having paramiko or invoke.

Edge cases

• Fabric 3.x needs Python 3.8+; older Pythons must pin fabric<3.

Reported in GitHub (gh:tankywoo/simiki#109): ModuleNotFoundError: No module named 'fabric' (tankywoo/simiki#109). The verified fix: Asked on Stack Overflow by developers getting No module named 'fabric' in fresh environments. The verified answer: install it into the active interpreter with python -m pip install fabric, watching for venv mismatches. Source: the linked Stack Overflow thread. Source: https://github.com/tankywoo/simiki/issues/109 Thread ref: gh:tankywoo/simiki#109