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Nathan McElwain4,575 Points
Why not camelCase?
It was my understanding that it was a stylistic choice, and not so much a PEP8 no-no.
Sue Dough35,798 Points
Function names should be lowercase, with words separated by underscores as necessary to improve readability in python.
Kenneth LoveTreehouse Guest Teacher
You can, of course, use whatever naming convention you want. PEP 008 just suggests using snake_case for variable names because it makes them very visually distinct from the CamelCased class names.
CamelCase is the naming convention that can be used for variable as well as file names. CamelCase can be used instead of the underscore naming convention. An example of camelCase would be MyFakeFile and underscore would be my_fake_file.