Defining __eq__ without __hash__ sets __hash__ to None in Python 3, so
Delorean instances were unhashable and could not be used in sets or as
dict keys (unlike datetime). Hash on self.epoch, the same value __eq__
compares, so equal instances hash equal.
Defining __eq__ without __hash__ sets __hash__ to None in Python 3, so
Delorean instances were unhashable and could not be used in sets or as
dict keys (unlike datetime). Hash on self.epoch, the same value __eq__
compares, so equal instances hash equal.