Python String isupper() Method with Examples

In the previous article, we have discussed Python String istitle() Method Examples
isupper() Method in Python:

The string isupper() method determines whether all characters in a string are uppercased.

Syntax:

string.isupper()

Parameters: This function has no parameters.

Return Value:

The isupper() method gives:

  • True if all of the characters in a string are uppercase.
  • If any of the characters in a string are lowercase, this function returns false.

Examples:

Example1:

Input:

Given string = 'Welcome To Python-programs'
Given string = '1234 HELLO ALL @'
Given string = 'GOOD MORNING BTECHGEEKS'

Output:

The given string =  Welcome To Python-programs
Checking if the given string has all uppercase characters or not =  False
The given string =  1234 HELLO ALL @
Checking if the given string has all uppercase characters or not =  True
The given string =  GOOD MORNING BTECHGEEKS
Checking if the given string has all uppercase characters or not =  True

Example2:

Input:

Given string = 'HELLO THIS IS BTECH_GEEKS'
Given string = 'ThIs IS a PYThon learning PLATform'
Given string = '#### HELLO EVERYONE ##%%$12346'

Output:

The given string =  HELLO THIS IS BTECH_GEEKS
Checking if the given string has all uppercase characters or not =  True
The given string =  ThIs IS a PYThon learning PLATform
Checking if the given string has all uppercase characters or not =  False
The given string =  #### HELLO EVERYONE ##%%$12346
Checking if the given string has all uppercase characters or not =  True

String isupper() Method 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 isupper() function to the given string that returns true if all of the characters in a given string are uppercase. If any of the characters in a string are lowercase, this function returns false.
  • Store it in another variable.
  • Print the above-given String.
  • Print the result after checking if the given string has all uppercase characters or not.
  • Similarly, do the same for other strings and print the result.
  • The Exit of Program.

Below is the implementation:

# Give the string as static input and store it in a variable.
gvn_strng1 = 'Welcome To Python-programs'
# Apply isupper() function to the given string that returns true if all
# of the characters in a given string are uppercase. If any of the characters
# in a string are lowercase, this function returns false.
# Store it in another variable.
rslt_1 = gvn_strng1.isupper()
# Print the above-given String.
print("The given string = ", gvn_strng1)
# Print the result after checking if the given string has all uppercase
# characters or not.
print("Checking if the given string has all uppercase characters or not = ", rslt_1)
# Similarly, do the same for other strings and print the result.
gvn_strng2 = '1234 HELLO ALL @'
rslt_2 = gvn_strng2.isupper()
print("The given string = ", gvn_strng2)
print("Checking if the given string has all uppercase characters or not = ", rslt_2)

gvn_strng3 = 'GOOD MORNING BTECHGEEKS'
rslt_3 = gvn_strng3.isupper()
print("The given string = ", gvn_strng3)
print("Checking if the given string has all uppercase characters or not = ", rslt_3)

Output:

The given string =  Welcome To Python-programs
Checking if the given string has all uppercase characters or not =  False
The given string =  1234 HELLO ALL @
Checking if the given string has all uppercase characters or not =  True
The given string =  GOOD MORNING BTECHGEEKS
Checking if the given string has all uppercase characters or not =  True

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 isupper() function to the given string that returns true if all of the characters in a given string are uppercase. If any of the characters in a string are lowercase, this function returns false.
  • Store it in another variable.
  • Print the above-given String.
  • Print the result after checking if the given string has all uppercase characters or not.
  • Similarly, do the same for other strings and print the result.
  • The Exit of Program.

Below is the implementation:

# Give the string as user input using the input() function and store it in a variable.
gvn_strng1 = input("Enter some Random String = ")
# Apply isupper() function to the given string that returns true if all
# of the characters in a given string are uppercase. If any of the characters
# in a string are lowercase, this function returns false.
# Store it in another variable.
rslt_1 = gvn_strng1.isupper()
# Print the above-given String.
print("The given string = ", gvn_strng1)
# Print the result after checking if the given string has all uppercase
# characters or not.
print("Checking if the given string has all uppercase characters or not = ", rslt_1)
# Similarly, do the same for other strings and print the result.
gvn_strng2 = input("Enter some Random String = ")
rslt_2 = gvn_strng2.isupper()
print("The given string = ", gvn_strng2)
print("Checking if the given string has all uppercase characters or not = ", rslt_2)

gvn_strng3 = input("Enter some Random String = ")
rslt_3 = gvn_strng3.isupper()
print("The given string = ", gvn_strng3)
print("Checking if the given string has all uppercase characters or not = ", rslt_3)

Output:

Enter some Random String = HELLO THIS IS BTECH_GEEKS
The given string = HELLO THIS IS BTECH_GEEKS
Checking if the given string has all uppercase characters or not = True
Enter some Random String = THis is A PYTHON LEARNING PLATform
The given string = THis is A PYTHON LEARNING PLATform
Checking if the given string has all uppercase characters or not = False
Enter some Random String = #### HELLO EVERYONE #@@#5678
The given string = #### HELLO EVERYONE #@@#5678
Checking if the given string has all uppercase characters or not = True

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