Hi,
When I try to run the following code:
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from collections import Counter, OrderedDict
class OrderedCounter(Counter, OrderedDict):
'Counter that remembers the order elements are first seen'
def __repr__(self):
return '%s(%r)' % (self.__class__.__name__,
OrderedDict(self))
def __reduce__(self):
return self.__class__, (OrderedDict(self),)
oc = OrderedCounter('abracadabra')
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I don't know the use of '__reduce__', even I look it up on Python website.
On that website, it explains 'pickle' module:
https://docs.python.org/2/library/pickle.html
But the above example without import that module. Is it from built-in?
Anyhow, I don't find a built-in explanation about '__reduce__'.
What use of the above two new self methods are in class OrderedCounter?
Thanks,
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