exes_and_ohs.py

def xo(s):
    """Check to see if a string has the same amount of 'x's and 'o's.
        The method must return a boolean and be case insensitive.
        The string can contains any char.

        Examples input/output:

        XO("ooxx") => true
        XO("xooxx") => false
        XO("ooxXm") => true
        XO("zpzpzpp") => true // when no 'x' and 'o' is present
        should return true
        XO("zzoo") => false
    """
    # no_of_x = 0
    # no_of_o = 0
    # for symbol in s:
    #     if symbol == 'x':  # don't use "is" pto compare two different objects
    #         no_of_x += 1
    #     elif symbol == 'o':
    #         no_of_o += 1

    # if no_of_o == no_of_x:
    #     return True
    # else:
    #     return False

    s = s.lower()
    return s.count('x') == s.count('o')  # there is count method for string and # lists