Python Check User input is a Letter or Number

Python program to check if the input is number or letter; In this tutorial, you will learn how to check if the input is a number or letter in python.

Python Check User input is a Letter or Number

• Python code to check whether a string contains a number or not
• Python check if given string contains only letter

Python code to check whether a string contains a number or not

• Take input from the user.
• Check whether a string contains number or not by using isdigit() function.
• Print the result.

# python code to check whether a string
# contains only digits or not

#
str1 = input("Please enter number or string or both")

# checking & printing messages
if str1.isdigit():
    print("str contains a number")
else:
    print("str does not contain a number")

After executing the program, the output will be:

Execution -1

Please enter number or string or both 1234
str contains a number

Execution -2

Please enter number or string or both test556
str does not contain a number

Python check if given string contains only letter

• Take input from the user.
• Check whether a string contains letter or not by using isalpha() function.
• Print the result.

# python code to check whether a string
# contains only letter or not

#
str1 = input("Please enter anything ")

# Code to check
if str1.isalpha():
    print("String contains only letters")
else:
    print("String doesn't contains only letters") 

After executing the program, the output will be:

Execution – 1

Please enter anything here
String contains only letters

Execution – 2

Please enter anything  hello34
String doesn't contains only letters

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