The upper() method in Python is a built-in method that returns a copy of the original string with all the alphabetical characters converted to uppercase.
Here’s an example of how to use the upper() method in Python:
string = "hello, world!"
print(string.upper())Example 1
Using upper() method on a string variable.
string = "hello, world!"
uppercase_string = string.upper()
print(uppercase_string)Output:
HELLO, WORLD!Example 2
Using upper() method on a string input by user.
string = input("Enter a string: ")
uppercase_string = string.upper()
print("Uppercase string:", uppercase_string)Output:
Enter a string: pleypot
Uppercase string: PLEYPOTExample 3
Using upper() method to check if a string contains all uppercase letters.
string = "HELLO, WORLD!"
if string == string.upper():
print("String contains all uppercase letters")
else:
print("String does not contain all uppercase letters")Output:
String contains all uppercase lettersExample 4
Using upper() method with string formatting.
name = "John"
age = 30
greeting = f"Hello, my name is {name.upper()} and I am {age} years old"
print(greeting)Output:
Hello, my name is JOHN and I am 30 years oldExample 5
Using upper() method with list comprehension.
strings = ["apple", "banana", "cherry"]
uppercase_strings = [string.upper() for string in strings]
print(uppercase_strings)Output:
['APPLE', 'BANANA', 'CHERRY']
