check if key in dictionary python count 2b1 add if it is

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showing results for - "check if key in dictionary python count 2b1 add if it is"
Lennard
02 May 2018
1from collections import defaultdict
2dct = defaultdict(int)
3
4for key in data:
5  dct[key] += 1
6
7# defaultdict(<type 'int'>, {'a': 4, 'c': 3, 'b': 2, 'd': 1})
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