Python string isidentifier














































Python string isidentifier



Python String : isidentifier()


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

The isidentifier() method returns True if the string is a valid identifier in Python. If not, it returns False.


Syntax :

string.isidentifier()


Parameter Values :

The isidentifier() doesn't take any parameters.

Returns :

The isidentifier() method returns:

  • True if the string is a valid identifier
  • False if the string is not a invalid identifier


Sample Code :

1.
string = 'Python'
print(string.isidentifier())

string = 'Py thon'
print(string.isidentifier())

string = '22Python'
print(string.isidentifier())

string= ''
print(string.isidentifier())
Output :
True
False
False
False


2.
string = 'root33'
if string.isidentifier() == True:
  print(string, 'is a valid identifier.')
else:
  print(string, 'is not a valid identifier.')
  
string = '33root'
if string.isidentifier() == True:
  print(string, 'is a valid identifier.')
else:
  print(string, 'is not a valid identifier.')
  
string = 'root 33'
if string.isidentifier() == True:
  print(string, 'is a valid identifier.')
else:
  print(string, 'is not a valid identifier.')
Output :
root33 is a valid identifier.
33root is not a valid identifier.
root 33 is not a valid identifier.


Hence,we can see above function isidentifier() returns true if the string is a valid identifier in Python. If not, it returns False.



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


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