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Python String isupper() method is a built-in function that returns True if all the characters in the string are uppercase. If the string contains at least one lowercase character, the method returns False.
Contents
isupper() Syntax
The syntax of isupper() method is:
string.isupper()
isupper() Parameter
The isupper() method doesn’t take any parameters.
isupper() Return Value
The isupper() method returns:
True if all alphabets in a string are uppercase alphabets.False if the string contains one or more lowercase alphabets.
Example 1: Demonstrating the working of isupper() method
text1=”ITSMYCODe”
text2=”ITSMYCODE”
print(“Is ITSMYCODe all uppercase:”,text1.isupper())
print(“Is ITSMYCODE all uppercase:”,text2.isupper())
Output
Is ITSMYCODe all uppercase: False
Is ITSMYCODE all uppercase: True
Example 2: Practical use case of isupper() in a program
The following program will determine if the given sentence consists of all uppercase characters.
text1 = “PYTHON IS fun”
text2 = “WELCOME TO PYTHON TUTORIALS”
if(text1.isupper()==True):
print(“The text contains all uppercase characters”)
else:
print(“The text contains at least one lowercase characters”)
if(text2.isupper()==True):
print(“The text contains all uppercase characters”)
else:
print(“The text contains at least one lowercase characters”)
Output
The text contains at least one lowercase characters
The text contains all uppercase characters
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