Fix: "No module named manim" Error | QuantumSketch
'No module named manim' means Python can't find Manim — usually the wrong environment. Activate your venv or pip install manim into the right interpreter.
"No module named manim" means Python can't find the Manim package — almost always because you're running the wrong Python environment. Activate your virtual environment, or install Manim into the interpreter you're actually running.
The fast fix
Install with python -m pip so the package lands in the interpreter that python runs:
python -m pip install manim
If you use a virtual environment, activate it first:
# macOS / Linux
source manim-env/bin/activate
# Windows
manim-env\Scripts\activate
Then python your_scene.py (or manim ...) will find it.
Why it happens
pip and python can point to different environments. You pip install manim into env A, then run python from env B — which has no Manim. The package exists; it's just not on this interpreter's path.
Confirm which env you're in
python -c "import sys; print(sys.executable)"
pip -V
Both should point to the same location. Inside an activated venv, they align automatically.
| Symptom | Cause | Fix |
|---|---|---|
| Works in terminal, not VS Code | Editor uses other interpreter | Select the venv in VS Code |
| pip install succeeded, import fails | pip ≠ python env | python -m pip install manim |
| Multiple Pythons installed | Version mismatch | Use one venv consistently |
Then verify the rest
Once the import works, run manim checkhealth to confirm FFmpeg and LaTeX are also detected.
Skip environment management
Python environments are the #1 beginner trap. QuantumSketch has no local Python at all — you prompt, it renders. See Install Manim on Windows for the local path.
Written by Shihab Shahriar Antor · Shahriar Labs
FAQ
Q.Why does Python say 'No module named manim' after I installed it?
Because you installed Manim into one Python environment but you're running your script with a different one. This happens constantly: you pip install manim into a virtual environment but run python from a terminal where that venv isn't activated, or you have multiple Python versions and pip installed into a different one than python uses. The Manim package physically exists — just not on the import path of the interpreter you're running. Activating the correct environment, or installing into the interpreter you actually run, resolves it.
Q.How do I make sure pip and python use the same environment?
Run python -m pip install manim instead of bare pip install manim. Using python -m pip guarantees the package installs into the exact interpreter that python launches, eliminating the mismatch. To confirm, run python -c 'import sys; print(sys.executable)' to see which interpreter you're using, and pip -V to see which environment pip targets — they should point to the same place. Inside an activated virtual environment, both automatically align.