Python String isdecimal() Method

By IncludeHelp Last updated : December 08, 2024

Python String isdecimal() Method

The isdecimal() is an in-built method in Python, which is used to check whether a string contains only decimal characters or not.

Note:

Decimal characters contain all digits from 0 to 9.
String should be Unicode object - to define a string as Unicode object, we use u as prefix of the string value.

Syntax

String.isdecimal();

Return Type

true - If all characters of the string are decimal characters then method returns true.
false - If any of the characters of the string is not a decimal character then method returns false.

Example

# str1 with only decimal characters
str1 = u"362436"
print(str1.isdecimal ())

# str2 with alphabets and decimal characters
str2 = u"Hello36"
print(str2.isdecimal ())

# str3 with alphabets and special characters
str3 = u"@Hell36#"
print(str3.isdecimal ())

Output

    True
    False
    False