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Python program to input a string and find total number of letters and digits
Here, we are going to learn how to find the total number of letters and digits in a given string in Python programming language?
By IncludeHelp Last updated : February 25, 2024
Problem statement
Given a string str1 and we have to count the total numbers of letters and digits.
Example
Input:
"Hello World!"
Output:
Letters: 10
Digits: 0
Input:
"Hello@123"
Output:
Letters: 5
Digits: 3
Using Loop By Checking Each Character
(Manual) By checking each character of the string with a range of the letters and numbers using the conditional statement.
print("Input a string: ")
str1 = input()
no_of_letters, no_of_digits = 0,0
for c in str1:
if (c>='a' and c<='z') or (c>='A' and c<='Z'):
no_of_letters += 1
if c>='0' and c<='9':
no_of_digits += 1
print("Input string is: ", str1)
print("Total number of letters: ", no_of_letters)
print("Total number of digits: ", no_of_digits)
Output
RUN 1:
Input a string:
Hello World!
Input string is: Hello World!
Total number of letters: 10
Total number of digits: 0
RUN 2:
Input a string:
Hello@123
Input string is: Hello@123
Total number of letters: 5
Total number of digits: 3
Using isalpha() and isnumeric() Methods
By using isalpha() and isnumeric() methods
print("Input a string: ")
str1 = input()
no_of_letters, no_of_digits = 0,0
for c in str1:
no_of_letters += c.isalpha()
no_of_digits += c.isnumeric()
print("Input string is: ", str1)
print("Total number of letters: ", no_of_letters)
print("Total number of digits: ", no_of_digits)
Output
RUN 1:
Input a string:
Hello World!
Input string is: Hello World!
Total number of letters: 10
Total number of digits: 0
RUN 2:
Input a string:
Hello@123
Input string is: Hello@123
Total number of letters: 5
Total number of digits: 3
To understand the above programs, you should have the basic knowledge of the following Python topics:
Python String Programs »
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