Question

Write a complete Python program that asks the user for a line of text (not just a single word), and then tells the user whether the string is a palindrome (same forward and backward) if you ignore case and non-alphabetic characters. The following methods and functions may be useful: str.upper(), str.isalpha() -> bool, reversed(str) -> sequence, str.find(str) -> int, str.replace(str, str), str.center(int). Unless otherwise specified, they all return a string.

Answer 1

Program :

def Palindrome(s):     #find given text is palindrome or not
    l, h = 0, len(s) - 1
    s = s.upper()        # Change text to Upper case letters
    while (l <= h): 
        if (not(s[l] >= 'A' and s[l] <= 'Z')): 
            l += 1
        elif (not(s[h] >= 'A' and s[h] <= 'Z')): 
            h -= 1
        elif (s[l] == s[h]): 
            l += 1
            h -= 1
        else: 
            return False
    return True
    
text =str(input("Enter a sentence:"))    #read text from user
if Palindrome(text)==True:              
    print("Text is palindrome!!");
else:
    print("Text is not a palindrome!!")

Output :

Thank you Have a great day!!! Please do like.