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y56/collections.defaultdict

Last active April 19, 2020 01:29
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collections.defaultdict(int) collections.defaultdict(lambda: 0)
Raw
collections.defaultdict
collections.defaultdict(int)
# good
collections.defaultdict(lambda: 0)
# good
collections.defaultdict(lambda x:x**2)
# TypeError: <lambda>() missing 1 required positional argument: 'x'
# it seems program expects function without arguments
# Note that int() gives 0
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