Python string islower














































Python string islower



Python String : islower()


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

The islower() method returns True if all alphabets in a string are lowercase alphabets. If the string contains at least one uppercase alphabet, it returns False.


Syntax :

string.islower()


Parameter Values :

The islower() doesn't take any parameters.

Returns :

The islower() method returns:

  • True if all alphabets that exist in the string are lowercase alphabets.
  • False if the string contains at least one uppercase alphabet.


Sample Code :

1.
string = 'this is good'
print(string.islower())

string = 'th!s is a1so g00d'
print(string.islower())

string = 'this is Not good'
print(string.islower())
Output :
True
True
False


2. 
string = 'this is good'
if string.islower() == True:
  print('Does not contain uppercase letter.')
else:
  print('Contains uppercase letter.')
  
string = 'this is Good'
if string.islower() == True:
  print('Does not contain uppercase letter.')
else:
  print('Contains uppercase letter.')
Output :
Does not contain uppercase letter.
Contains uppercase letter.


Hence,we can see above function islower() returns true if string has at least 1 cased character and all cased characters are in lowercase and false otherwise.


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


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