Python: Reverse a given string in lower case

Last update on April 17 2025 13:00:53 (UTC/GMT +8 hours)

Reverse String in Lowercase

Write a Python program to reverse a given string in lower case.

Sample Solution-1:

Python Code:

# Define a function 'test' that reverses the input string and converts it to lowercase.
def test(input_str):
    # Using string slicing [::-1] to reverse the input string and lower() to convert it to lowercase.
    return input_str[::-1].lower()

# Test the 'test' function with different input strings.
str1 = "PHP"
print("Original string:", str1)
print("Reverse the said string in lower case:", test(str1))

str2 = "JavaScript"
print("\nOriginal string:", str2)
print("Reverse the said string in lower case:", test(str2))

str3 = "PHPP"
print("\nOriginal string:", str3)
print("Reverse the said string in lower case:", test(str3))

Sample Output:

Original string: PHP
Reverse the said string in lower case: php

Original string: JavaScript
Reverse the said string in lower case: tpircsavaj

Original string: PHPP
Reverse the said string in lower case: pphp

Explanation:

Here is a breakdown of the above Python code:

Test Function (test function):

The "test()" function is defined to reverse the input string and convert it to lowercase.
It uses string slicing ([::-1]) to reverse the input string and the lower() method to convert it to lowercase.

Flowchart:

Sample Solution-2:

Python Code:

# Define a function 'test' that reverses the input string after converting it to lowercase.
def test(input_str):
    # Using the lower() method to convert the input string to lowercase.
    # Then, using string slicing [::-1] to reverse the lowercase input string.
    return input_str.lower()[::-1]

# Test the 'test' function with different input strings.
str1 = "PHP"
print("Original string:", str1)
print("Reverse the said string in lower case:", test(str1))

str2 = "JavaScript"
print("\nOriginal string:", str2)
print("Reverse the said string in lower case:", test(str2))

str3 = "PHPP"
print("\nOriginal string:", str3)
print("Reverse the said string in lower case:", test(str3))

Sample Output:

Original string: PHP
Reverse the said string in lower case: php

Original string: JavaScript
Reverse the said string in lower case: tpircsavaj

Original string: PHPP
Reverse the said string in lower case: pphp

Explanation:

Here is a breakdown of the above Python code:

Test Function (test function):

The "test()" function is defined to convert the input string to lowercase using lower() and then reverse it using string slicing ([::-1]).

Flowchart:

For more Practice: Solve these Related Problems:

Write a Python program to convert a string to lowercase and then reverse its characters using slicing.
Write a Python program to output the reverse of a given string after converting it to lowercase.
Write a Python program to transform a string to lower case and reverse its order using a loop.
Write a Python program to take a string, change it to lowercase, and return the reversed version without using built-in reverse functions.

Go to:

Previous: Write a Python program to check if a given string contains two similar consecutive letters.
Next: Write a Python program to convert the letters of a given string (same case-upper/lower) into alphabetical order.

Python Code Editor:

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