isdigit() String Method in Python with Examples

isdigit() method returns True if the string is a digit string otherwise it returns False.

A string is a decimal string if all characters in the string are digit and there is at least one character in the string.

Example 1: isdigit() String Method

message = '12345'

if message.isdigit():
    print('"%s" is digit string.' %(message))
else:
    print('"%s" is not digit string.' %(message))

Output

"12345" is digit string.

Example 2: isdigit() String Method

message = '12345 cat'

if message.isdigit():
    print('"%s" is digit string.' %(message))
else:
    print('"%s" is not digit string.' %(message))

Output

"12345 cat" is not digit string.

Related String Methods