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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 _default_hashfunc(content, hashbits):
 """ Default hash function is variable-length version of Python's builtin hash. :param content: data that needs to hash. :return: return a decimal number. """

    if content == "":
        return 0

    x = ord(content[0]) << 7
    m = 1000003
    mask = 2 ** hashbits - 1
    for c in content:
        x = ((x * m) ^ ord(c)) & mask
    x ^= len(content)
    if x == -1:
        x = -2
    return x