Python string isupper














































Python string isupper



Python String : isupper()


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

The string isupper() method returns whether or not all characters in a string are uppercased or not.


Syntax :

string.isupper()


Parameter Values :

The isupper() doesn't take any parameters.

Returns :

The isupper() method returns:

  • True if all characters in a string are uppercase characters
  • False if any characters in a string are lowercase characters


Sample Code :

1.
# example string
string = "THIS IS GOOD!"
print(string.isupper())

# numbers in place of alphabets
string = "THIS IS ALSO G00D!"
print(string.isupper())

# lowercase string
string = "THIS IS not GOOD!"
print(string.isupper())
Output :
True
True
False


2.
string = 'THIS IS GOOD'
if string.isupper() == True:
  print('Does not contain lowercase letter.')
else:
  print('Contains lowercase letter.')
  
string = 'THIS IS gOOD'
if string.isupper() == True:
  print('Does not contain lowercase letter.')
else:
  print('Contains lowercase letter.')
Output :
Does not contain lowercase letter.
Contains lowercase letter.


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


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


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