How do I resolve modulenotfounderror: no module named 'yaml' even though PyYAML is installed?

General Discussions
, ,
1

I’m trying to run a Python script using: python3 env/common_config/add_imagepullsecret.py

But I keep getting this error:

ImportError: No module named 'yaml'

I’ve already installed PyYAML, and running pip3 install pyyaml says:

Requirement already satisfied: pyyaml in /usr/lib64/python3.4/site-packages (3.12)

Still, the script fails with modulenotfounderror: no module named ‘yaml’. I suspect this might be a Python environment or version issue.

How can I fix this and ensure my script finds and imports the PyYAML module correctly?

2

One possibility is that pip3 installed pyyaml for a different Python version than the one your script is using. It’s especially common on systems with both Python 2.x and 3.x, or multiple 3.x versions installed. Try running:

python3 -m pip install pyyaml

That ensures you’re installing pyyaml into the same environment that python3 uses. Also, double-check the shebang at the top of your script - if it’s #!/usr/bin/python, you might accidentally be using an older Python version that doesn’t have the package.