palindrome code with testing

inputTaker.py

while True:
    myInput = input("Enter your string please: \n");
    if(myInput.lower() == "exit"):
        print("Exiting programm...............");
        break;
    result = palindromeWord(myInput)
    if result == True:
        print(f'{myInput} is palindrome')
    elif result == False:
        print(f'{myInput} is not a palindrome')
    else:
        print(f'{myInput} is not a string')

palindrome.py

def palindromeWord(strInput):
    if (isinstance(strInput, (str)) == False):
        return None
    if len(strInput) == 0 or len(strInput) == 1:
        return True
    
    left = 0;
    right = len(strInput) - 1

    while (left < right):
        if(strInput[left] != strInput[right]):
            return False
        left = left + 1
        right = right - 1
    return True
    
 
allInputs = ["abba", "abcd", "efggfe", "asddsa", "xcvbnmj", 1232, 9090909];

for eachInput in allInputs:
    result = palindromeWord(eachInput)
    print(f'result of {eachInput} is {result}')

test.py

counter = 3
while(counter != 0):
    myInput = input("Enter your string please: \n");
    result = palindromeWord(myInput)
    if result == True:
        print(f'{myInput} is palindrome')
    elif result == False:
        print(f'{myInput} is not a palindrome')
    else:
        print(f'{myInput} is not a string')
    counter = counter - 1