I'm trying to step through some code using Spyder (Python 3.6) but I keep getting the below error: 

ModuleNotFoundError: No module named 'PyQt4'

I have googled it and looked through Stack Overflow, but none of the possibilities seem to work.
Qt4 is no longer supported in Anaconda, so no new packages were created for Python 3.6.
You could use a community channel called conda-forge to install PyQt4 for Python 3.6. However, that channel is not supported nor associated with Continuum (the company behind Anacoda).
How to get PyQt4 working with Spyder