import string


class AddressBook:
    def __init__(self):
        self.addresses = []

    def add_address(self, name, address):
        self.addresses.append((name, address))

    def get_addresses_by_first_letters(self, letters):
        letters = letters.upper()
        return [
            (name, address)
            for name, address in self.addresses
            if any(name.upper().startswith(letter) for letter in letters)
        ]

    def __getitem__(self, key):
        if isinstance(key, str):
            return self.get_addresses_by_first_letters(key)
        if isinstance(key, slice):
            start, stop, step = key.start, key.stop, key.step
            letters = string.ascii_uppercase[
                string.ascii_uppercase.index(start) : string.ascii_uppercase.index(stop)
                + 1 : step
            ]
            return self.get_addresses_by_first_letters(letters)


address_book = AddressBook()
address_book.add_address("Sherlock Holmes", "221B Baker St., London")
address_book.add_address(
    "Wallace and Gromit", "62 West Wallaby Street, Wigan, Lancashire"
)
address_book.add_address("Peter Wimsey", "110a Piccadilly, London")
address_book.add_address("Al Bundy", "9764 Jeopardy Lane, Chicago, Illinois")
address_book.add_address(
    "John Dolittle", "Oxenthorpe Road, Puddleby-on-the-Marsh, Slopshire, England"
)
address_book.add_address(
    "Spongebob Squarepants", "124 Conch Street, Bikini Bottom, Pacific Ocean"
)
address_book.add_address(
    "Hercule Poirot", "Apt. 56B, Whitehaven Mansions, Sandhurst Square, London W1"
)
address_book.add_address("Bart Simpson", "742 Evergreen Terrace, Springfield, USA")


print(string.ascii_uppercase)
print(string.ascii_uppercase.index("A"))
print(string.ascii_uppercase.index("Z"))


print(address_book["A"])
print(address_book["B"])
print(address_book["S"])
print(address_book["A":"H"])