Python String upper() Method with Examples

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In the previous article, we have discussed Python String lower() Method with Examples
String upper() Method in Python:

The upper() method returns a string in which all characters are capitalized(upper case).

Symbols and numbers are not accepted.

Syntax: 

string.upper()

Parameter Values: This method has no parameters.

Return Value:

upper() returns the uppercase string from a given string.

All lowercase characters are converted to uppercase.

If no lowercase characters are found, the original string is returned.

Examples:

Example1:

Input:

Given String = "hello THIS iS btechgeeks"

Output:

The given original string : hello THIS iS btechgeeks
The given string after applying upper() method :
HELLO THIS IS BTECHGEEKS

Example2:

Input:

Given String = "gooD mornING btechgeeks @!@#123"

Output:

The given original string : gooD mornING btechgeeks @!@#123
The given string after applying upper() method :
GOOD MORNING BTECHGEEKS @!@#123

String upper() Method with Examples in Python

Method #1: Using Built-in Functions (Static Input)

Approach:

  • Give the string as static input and store it in a variable.
  • Apply the upper() method to the given string that returns a string with all characters in the upper case.
  • Store it in another variable.
  • Print the given original string.
  • Print the given string after applying the upper () method.
  • The Exit of the program.

Below is the implementation:

# Give the string as static input and store it in a variable.
gvn_str = "hello THIS iS btechgeeks"
# Apply upper() method to the given string that returns a string with all
# characters in upper case.
# Store it in another variable.
rslt = gvn_str.upper()
# Print the given original string.
print("The given original string :", gvn_str)
# Print the given string after applying the upper() method.
print("The given string after applying upper() method :")
print(rslt)

Output:

The given original string : hello THIS iS btechgeeks
The given string after applying upper() method :
HELLO THIS IS BTECHGEEKS

How does upper() function work in a program?

Approach:

  • Give the first string as static input and store it in a variable.
  • Give the second string as static input and store it in another variable.
  • Converting both the given first and second strings into uppercase using the upper() method and checking if both the strings are the same or not using the if conditional statement.
  • If it is true, then print “The given first and second strings are same”.
  • Else print “The given first and second strings are NOT same”.
  • The Exit of the program.

Below is the implementation:

# Give the first string as static input and store it in a variable.
gvn_fststr = "WELCOME to python PROGRAMS"
# Give the second string as static input and store it in a variable.
gvn_scndstr = "Welcome to PYTHON programs"
# Converting both the first and second strings into uppercase using the upper()
# method and checking if both the strings are same or not using the if conditional
# statement.
if(gvn_fststr.upper() == gvn_scndstr.upper()):
    # If it is true, then print "The given first and second strings are same".
    print("The given first and second strings are same")
else:
    # Else print "The given first and second strings are NOT same".
    print("The given first and second strings are NOT same")

Output:

The given first and second strings are same

Method #2: Using Built-in Functions (User Input)

Approach:

  • Give the string as user input using the input() function and store it in a variable.
  • Apply the upper() method to the given string that returns a string with all characters in the upper case.
  • Store it in another variable.
  • Print the given original string.
  • Print the given string after applying the upper () method.
  • The Exit of the program.

Below is the implementation:

# Give the string as user input using the input() function and store it in a variable.
gvn_str = input("Enter some Random String = ")
# Apply upper() method to the given string that returns a string with all
# characters in upper case.
# Store it in another variable.
rslt = gvn_str.upper()
# Print the given original string.
print("The given original string :", gvn_str)
# Print the given string after applying the upper() method.
print("The given string after applying upper() method :")
print(rslt)

Output:

Enter some Random String = gooD mornING btechgeeks @!@#123
The given original string : gooD mornING btechgeeks @!@#123
The given string after applying upper() method :
GOOD MORNING BTECHGEEKS @!@#123

Go through our tutorial and learn about various Python String Method Examples and learn how to apply the knowledge while dealing with strings.