import string
import math

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

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

    half = len(lower_string)/2
    # Round the value down since middle value doesn't matter
    halfdown = math.floor(half)
    # print(halfup)
    # print(halfdown)
    first = []
    second = []
    # print(lower_string)

    for i in range(halfdown):
        # print(i)
        # print(lower_string[i])
        first.append(lower_string[i])

    for j in range(halfdown+1, len(lower_string)):
        second.insert(0, lower_string[j])

    # print(first)
    # print(second)
    if first == second:
        return True
    else:
        return False

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