check how many keys in object are lists python code example

Example 1: check if key in dictionary python count +1 add if it is

from collections import defaultdict
dct = defaultdict(int)

for key in data:
  dct[key] += 1

# defaultdict(<type 'int'>, {'a': 4, 'c': 3, 'b': 2, 'd': 1})

Example 2: python test if list of dicts has key

>>> lod = [{1: "a"}, {2: "b"}]
>>> any(1 in d for d in lod)
True
>>> any(3 in d for d in lod)
False