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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 readsleb128(buff):
 """ Read a signed LEB128 at the current position of the buffer. :param buff: a file like object :return: decoded sLEB128 """

    result = 0
    shift = 0

    for x in range(0, 5):
        cur = get_byte(buff)
        result |= (cur & 0x7f) << shift
        shift += 7

        if not cur & 0x80:
            bit_left = max(32 - shift, 0)
            result = result << bit_left
            if result > 0x7fffffff:
                result = (0x7fffffff & result) - 0x80000000
            result = result >> bit_left
            break

    return result