Python is slow and difficult? Python has to be one of the easiest languages to learn, this is the reason it is used by NASA/ google as it is so close to a prototyping language. Also for speed you should be concerned about memory/cpu as none of us will probably ever come across a project where php, ruby or python would be an issue in our projects. You should choose a language as a tool based on what feels more natural to you and gets the job done correctly and quickly.
Check out django book for more on python/django:
http://www.djangobook.com/en/2.0/index.html