def Main(operation):

    mylist = [1, 4, 10]

    q = b"\xab"

    myDict = {"a": 1, "b": 34, "c": "abc", q: "123"}

    if operation == 1:

        return "a" in myDict

    elif operation == 2:

        return 3 in myDict

    elif operation == 3:

        # this should return true
        # the neo-vm uses 'HAS_KEY' op for lists
        # which only checks the length of the array :(
        # it doesn't test whether the array
        # contains the value
        return 2 in mylist

    elif operation == 4:
        # this should return false
        # even though 10 is in the list
        # because the list isn't 10 items long
        return 10 in mylist

    elif operation == 5:

        myDict["h"] = 3

        return "h" in myDict

    elif operation == 6:

        mylist.append(8)

        return 3 in mylist

    elif operation == 7:

        myDict[7] = "a"

        return 7 in myDict

    elif operation == 8:

        myDict.remove("a")

        return "a" in myDict

    elif operation == 9:

        return b"\xab" in myDict

    return False