how to count the frequency of elements in a list in python code example

Example 1: list count frequency python

import collections
a = [1,1,1,1,2,2,2,2,3,3,4,5,5]
counter=collections.Counter(a)
print(counter)
# Counter({1: 4, 2: 4, 3: 2, 5: 2, 4: 1})
print(counter.values())
# [4, 4, 2, 1, 2]
print(counter.keys())
# [1, 2, 3, 4, 5]
print(counter.most_common(3))
# [(1, 4), (2, 4), (3, 2)]

Example 2: python count the frequency of words in a list

from collections import Counter
list1=['apple','egg','apple','banana','egg','apple']
counts = Counter(list1)

print(counts)
# Counter({'apple': 3, 'egg': 2, 'banana': 1})