How to create a program in python that prints the number of occurrence of words in a string

Question

I wanted to create a code that printed the frequency of words in a string and I did but I had a little problem though. Here's the code:

string=input("Enter your string: ")
string=string.split()
a=0
while(a<len(string)):
     print (string[a], "=", string.count(string[a]))
     a=a+1

Everything ran fine but if a word occurred twice, it'd say the word and state the occurrence in two places. I really need help here. Thanks!

Answer 1

You can get rid of duplicates in a string by using set() and only iterate through unique strings:

s=input("Enter your string: ")
s=s.split()

for i in set(s):
    print(i, "=", s.count(i)

Alternatively you can use collections.Counter():

from collections import Counter

s=input("Enter your string: ")
s=s.split()

for key, value in Counter(s).items():
    print(key, "=", value)