Frequency of Elements in a List

There are multiple ways of doing this, but my favorite is using the Python Counter class. Python counter keeps track of the frequency of each element in the container. Counter() returns a dictionary with elements as keys and frequency as values. We also use the most_common() function to get the most_frequent element in the list.

Python: 3.0 Chaitanya Baweja 04 Jul 2021 0

# finding frequency of each element in a list
from collections import Counter

my_list = ['a','a','b','b','b','c','d','d','d','d','d']
count = Counter(my_list) # defining a counter object

print(count) # Of all elements
# Counter({'d': 5, 'b': 3, 'a': 2, 'c': 1})

print(count['b']) # of individual element
# 3

print(count.most_common(1)) # most frequent element
# [('d', 5)]

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