How do I install pexpect in Python?

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

Why causes the 'No module named pexpect' error?

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

ModuleNotFoundError: No module named 'pexpect'

Recommended: Install via pip into your active environment.

python -m pip install pexpect

Verification

Command

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

Expected output

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