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Python String | isdecimal() Method with Example

Python String isdecimal() method: In this tutorial, we will learn about isdecimal() method of String in Python with Example.
Submitted by IncludeHelp, on July 07, 2018

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();

Parameter: None

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/program:

# 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

Reference: String isdecimal()