How do I install py4j in Python?

The standard way to install py4j is by running `python -m pip install py4j`. If you are using Anaconda, use `conda install -c conda-forge py4j`.

Why causes the 'No module named py4j' error?

This error occurs when the python interpreter cannot locate the `py4j` 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 'py4j'

ModuleNotFoundError: No module named 'py4j'

Recommended: Install via pip into your active environment.

python -m pip install py4j

Verification

Command

python -c "import py4j; print(py4j.__version__)"

Expected output

Success! py4j version x.y.z (e.g., 2.4.0)