How do I install pydantic in Python?

The standard way to install pydantic is by running `python -m pip install pydantic`. If you are using Anaconda, use `conda install -c conda-forge pydantic`.

Why causes the 'No module named pydantic' error?

This error occurs when the python interpreter cannot locate the `pydantic` package. It is often caused by missing installation or environment mismatch (e.g. installing in global but running in venv).

How to fix ModuleNotFoundError: No module named 'pydantic'

ModuleNotFoundError: No module named 'pydantic'

For web development, always isolate your dependencies in a virtual environment.

Using Docker? Ensure you add `pydantic` to your `requirements.txt` and rebuild the container.

python -m pip install pydantic

Verification

Command

python -c "import pydantic; print(pydantic.__version__)"

Expected output

Success! pydantic version x.y.z (e.g., 2.4.0)