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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _hash(number, alphabet):
 """Hashes `number` using the given `alphabet` sequence."""

    hashed = ''
    len_alphabet = len(alphabet)
    while True:
        hashed = alphabet[number % len_alphabet] + hashed
        number //= len_alphabet
        if not number:
            return hashed