Python program to count the number of characters in a String

In this article, we will see the program to count the number of characters in a String. In Python, the len() function is used to determine the length of an object.

Example:

s = "Geeks for Geeks!"

# Count the characters using len() function
count = len(s)

print(count)  

16

Explanation

• The string s is initialized with the value "Geeks for Geeks!".
• The len() function is used to count the number of characters in the string, and the result is printed with the message "Number of characters:".

Using a for loop:

A for loop in Python allows you to iterate through each character in a string or element in an iterable. This method can be used to count characters by incrementing a counter during each iteration.

s = "GeeksforGeeks"

# Initialize count variable
count = 0

# Iterate through each character in the string
for char in s:
    count += 1

print(count) 

13

Explanation:

• The string s is initialized with the value "GeeksforGeeks".
• A variable count is set to 0 to keep track of the number of characters.
• A for loop iterates over each character in the string, and for each character, the count is incremented by 1. Finally, the total count is printed.

Using join() and map():

join() method combines elements of an iterable into a string, while map() applies a function to each element. Together, they provide an efficient way to process and concatenate items in a single operation.

# Define the input string
s = "GeeksForGeeks"

# Use map() to create an iterable of characters and join them to count
count = len(''.join(map(str, s)))

print(count)  

13

Explanation

• The string s is initialized with the value "GeeksForGeeks".
• The map() function converts each character of the string into a string (if needed), and join() concatenates them into a single string.
• The len() function is used to count the total number of characters in the concatenated string, and the result is printed.
  

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Article Tags :

• Python
• Python Programs
• Python string-programs

Practice Tags :

• python