How to Fix Module Not Found Error in PyTorch

The ModuleNotFoundError: No module named 'torch' happens when PyTorch is not installed or not found in your Python environment. Fix it by installing PyTorch using pip install torch or ensuring your environment is activated correctly.

Why This Happens

This error occurs because Python cannot find the PyTorch library in your current environment. It usually means PyTorch is not installed or you are running your code in a different environment than where PyTorch is installed.

python

import torch
print(torch.__version__)

Output

ModuleNotFoundError: No module named 'torch'

The Fix

Install PyTorch using the official command from the PyTorch website or via pip. Also, make sure you run your script in the same environment where PyTorch is installed.

bash

pip install torch

# Then run your Python code
import torch
print(torch.__version__)

Output

2.0.1

Prevention

Always create and activate a virtual environment before installing packages. Use pip list to check installed packages. Avoid mixing system Python and virtual environments to prevent confusion.

Related Errors

Other common errors include:

• ImportError: Occurs if PyTorch is partially installed or corrupted. Reinstall PyTorch to fix.
• Version mismatch: Using incompatible Python or CUDA versions can cause runtime errors.

Key Takeaways

Install PyTorch with pip using pip install torch to fix the module not found error.

Always run your code in the environment where PyTorch is installed.

Use virtual environments to manage dependencies and avoid conflicts.

Check installed packages with pip list before running your code.

Reinstall PyTorch if you encounter import or version errors.