Python Program to Count the Occurrences of Each Word in a String

This Python program counts the occurrences of each word in a string and prints the word counts.

Problem Statement

You are tasked with creating a Python program that counts the occurrences of each word in a given input string. Your program should take the input string, process it, and then display the words along with their respective counts.

Python Program to Count the Occurrences of a Word in a Text File

def count_word_occurrences(input_string):
    # Convert the input string to lowercase and split it into words
    words = input_string.lower().split()
    
    # Create an empty dictionary to store word counts
    word_count = {}
    
    # Loop through the words and update the word counts
    for word in words:
        if word in word_count:
            word_count[word] += 1
        else:
            word_count[word] = 1
            
    return word_count

# Get input from the user
input_string = input("Enter a string: ")

# Call the function to count word occurrences
word_occurrences = count_word_occurrences(input_string)

# Display the word occurrences
for word, count in word_occurrences.items():
    print(f"'{word}' occurs {count} times.")

How it Works

1. The program defines a function count_word_occurrences(input_string) to count word occurrences in a given input string.
2. The input string is converted to lowercase and split into words using lower() and split() functions, creating a list of words.
3. An empty dictionary word_count is created to store word occurrences.
4. The program loops through each word in the list:
   • If the word is already in word_count, its count is incremented.
   • If the word is not in word_count, a new entry is created with a count of 1.
5. The count_word_occurrences function returns the word_count dictionary.
6. The program gets user input, calls the function, and stores the result.
7. It iterates through the dictionary and prints each word along with its count.

Input/ Output