Python string isdecimal














































Python string isdecimal



Python String : isdecimal()


This article demonstrates how to use of isdecimal() method in string.

The isdecimal() method returns true if all characters in a string are decimal characters. If not, it returns false.


Syntax :

string.isdecimal()


Parameter Values :

The isdecimal() doesn't take any parameters.

Returns :

The isdecimal() returns:

  • True if all characters in the string are decimal characters.
  • False if at least one character is not decimal character.


Sample Code :

1.
string = "28212"
print(string.isdecimal())

# contains alphabets
string = "32ladk3"
print(string.isdecimal())

# contains alphabets and spaces
string = "Mo3 nicaG el l22er"
print(string.isdecimal())
Output :
True
False
False

The superscript and subscripts are considered digit characters but not decimals. If the string contains these characters (usually written using unicode), isdecimal() returns False.

Similarly, roman numerals, currency numerators and fractions are considered numeric numbers (usually written using unicode) but not decimals. The isdecimal() also returns False in this case.

There are two methods isdigit() and isnumeric() that checks whether the string contains digit characters and numeric characters respectively.


2.
string = '23455'
print(string.isdecimal())

#s = '%uFFFD3455'
string = '%uFFFD3455'
print(string.isdecimal())

# s = '%uFFFD'
string = '%uFFFD'
print(string.isdecimal())
Output :
True
False
False


Hence,we can see above function isdecimal() returns true if all characters in a string are decimal characters. If not, it returns False.



**********END OF ARTICLE **********


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