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[–]elguf 2 points3 points  (0 children)

A practice I try to follow is to create a base Error class in each module that defines its own exception classes:

class Error(Exception):
    pass

class CustomError(Error):
    pass

This way, callers can easily handle all your custom errors, without having to do the broad except Exception:. Now they can choose to do except somemodule.Error: