How do we find mode and number of occurrences of that mode in python?

Question

In an array [1,2,2,3] the mode is 2 and it occurs two times. How to get this as output for a particular array?

Does this answer your question? [Finding the mode of a list](https://stackoverflow.com/questions/10797819/finding-the-mode-of-a-list) — HPringles, Aug 29 '21 at 12:27

score 1 · Answer 1 · answered Aug 29 '21 at 12:36

You could use collections module form python and call in a counter for maximum occurrence of a number.

from collections import Counter
sample = [10, 10, 30, 10, 50, 30, 60]
print("Mode of List A is % s" % (Counter(sample).most_common(1)[0][0]))

If you are not relying much on the concept of how it is built, the easier way is to use the statistics module and get the mode.

Example:

from statistics import mode

sample=[1,2,2,2,3,4]
print(mode(sample))

score 0 · Answer 2 · answered Aug 29 '21 at 12:32

There are so many ways... But I guess the best one is:

Defining a function like:

def DuplicatesCheck(input_array):   
    for el in input_array:
        if input_array.count(el) > 1:
            return True
    return False

Then call it this way:

your_array = [1,2,2,3]
result = DuplicatesCheck(your_array)
if result:
    print('Positive')
else:
    print('Negative')

2 Answers2