checksum.py

# Takes a address (81 Characters) and converts it to an address with checksum (90 Characters)
def address_checksum(address):
    bytes_address = bytes(address)
    addy = Address(bytes_address)
    address = str(addy.with_valid_checksum())
    return address

# Takes an address with checksum and verifies if the address matches with the checksum
def is_valid_address(address_with_checksum):
    address = address_with_checksum[:81]
    new_address_with_checksum = address_checksum(address)
    if new_address_with_checksum == address_with_checksum:
        return True
    else:
        return False