I'm writing a class that implements rich comparisons, and I find myself
writing a lot of very similar code. If the calculation is short and
simple, I do something like this:
class Parrot:
def __eq__(self, other):
return self.plumage() == other.plumage()
def __ne__(self, other):
return self.plumage() != other.plumage()
def __lt__(self, other):
return self.plumage() < other.plumage()
def __gt__(self, other):
return self.plumage() > other.plumage()
def __le__(self, other):
return self.plumage() <= other.plumage()
def __ge__(self, other):
return self.plumage() >= other.plumage()
If the comparison requires a lot of work, I'll do something like this:
class Aardvark:
def __le__(self, other):
return lots_of_work(self, other)
def __gt__(self, other):
return not self <= other
# etc.
But I can't help feeling that there is a better way. What do others do?
--
Steven.
--
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