Sort Characters By Frequency.py

#!/usr/bin/python

'''
Given a string s, sort it in decreasing order based on the frequency of the characters. The frequency of a character is the number of times it appears in the string.
Return the sorted string. If there are multiple answers, return any of them.
'''

def main():
    s = input("Enter the word: ")

    a = []
    for char, count in Counter(s).most_common():
        a += [char] * count
        
    print(a)

if __name__ == "__main__":
    main()