isdecimal() String Method in Python with Examples

isdecimal() method returns True if the string is a decimal string otherwise it returns False.

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

Example 1: isdecimal() String Method

message = '12345'

if message.isdecimal():
    print('"%s" is decimal string.' %(message))
else:
    print('"%s" is not decimal string.' %(message))

Output

"12345" is decimal string.

Example 2: isdecimal() String Method

message = '12345 cat'

if message.isdecimal():
    print('"%s" is decimal string.' %(message))
else:
    print('"%s" is not decimal string.' %(message))

Output

"12345 cat" is not decimal string.

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