Python String upper() Method

Python upper() method converts all the character to uppercase and returns a uppercase string.

Signature

Parameters

No parameters

Return

It returns a string.

Let's see some examples of upper() method to understand it's functionality.

Python String upper() Method Example 1

First see a simple example of upper() method. This method returns a uppercase string.

# Python upper() method 
# Declaring table and variables
str = "Hello javatpoint"
# Calling function
str2 = str.upper()
# Displaying result
print(str2)

Output:

HELLO JAVATPOINT

Python String upper() Method Example 2

See, how can we use this method in programming. The below example converts all the elements of the list into uppercase. See the example.

# Python upper() method 
# Declaring variables
list = ["irfan","sohan","mohan"]
for  l in list:
    print(l.upper()) # Displaying result

Output:

 IRFAN
SOHAN
MOHAN

Python String upper() Method Example 3

An example that converts all the string into uppercase which starts with vowels. See the example below.

# Python upper() method 
# Declaring variables
names = ["irfan","sohan","aman","mohan"]
vowels = ['a','e','i','o','u']
for  l in names:
    for v in vowels:
        if(l.startswith(v)):
            print(l.upper()) # Displaying result

Output: