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Line 171 misses a closing parenthesis.
Global name 'expyriment' is not defined
You will need to import the expyriment package, in order to use it in Python.
I think at this point this forum thread might not be the best way for you to proceed. I get the impression that you might benefit more from first strengthening your general knowledge of Python (there are good free books available) and then have a look at the official Expyriment documentation. Especially the Getting Started Tutorial and the Example Experiments should be helpful to understand the general way Expyriment works.
I thank you for your precious suggestion and material.