Python String isupper() method
Last Updated :
18 Aug, 2022
Python String isupper() method returns whether all characters in a string are uppercase or not.
Python String isupper() method Syntax
Syntax: string.isupper()
Returns: True if all the letters in the string are in the upper case and False if even one of them is in the lower case.
Python String isupper() method Examples
Python3
print(("GEEKS").isupper())
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Output:
True
Example 1: Demonstrating the working of isupper()
Python3
isupp_str = "GEEKSFORGEEKS"
not_isupp = "Geeksforgeeks"
print ("Is GEEKSFORGEEKS full uppercase ? : " + str(isupp_str.isupper()))
print ("Is Geeksforgeeks full uppercase ? : " + str(not_isupp.isupper()))
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Output:
Is GEEKSFORGEEKS full uppercase ? : True
Is Geeksforgeeks full uppercase ? : False
Example 2: Practical Application
Python String isupper() function can be used in many ways and has many practical applications. One such application for checking the upper cases, checking Abbreviations (usually upper case), checking for correctness of sentence which requires all upper cases. Demonstrated below is a small example showing the application of isupper() method.
Python3
test_str = "Cyware is US based MNC and works in IOT technology"
list_str = test_str.split()
count = 0
for i in list_str:
if (i.isupper()):
count = count + 1
print ("Number of abbreviations in this sentence is : " + str(count))
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Output:
Number of abbreviations in this sentence is : 3
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