import string

def isPalindrome(s):
    """
    :type s: str
    :rtype: bool
    """
    # Create a translation table to remove uppercase letters and special characters
    translation_table = str.maketrans("", "", string.ascii_uppercase + string.punctuation + string.whitespace)

    # Use the translation table to remove uppercase letters and special characters
    cleaned_string = s.translate(translation_table)

    half = len(cleaned_string)/2

    first = []
    second = []
    for i in range(len(half)):
        
    return cleaned_string

print(isPalindrome("A man, a plan, a canal: Panama"))