ImportError: No module named openai, name 'ChatOpenAI' is not defined

 There could be many reasons for these error messages related to ChatOpenAI and openai.

If the issue is related to python or pip it will get resolved by following this:

python -m pip uninstall openai

python -m pip install --upgrade pip

python -m pip install openai

Sometimes openai might require a higher version of python then what is installed on your system.

You can check the required version as follows: 

pip show openai