human
Can you provide a the Python program you requested given the following:
Complete the below
def _DoubleDecoder():

    ''''Returns a decoder for a double field.
    This code works around a bug in struct.unpack for not-a-number.'
    '''
assistant
#Here is the Python program you requested.
    local_unpack = struct.unpack
    def InnerDecode(buffer, pos):
        new_pos = (pos + 8)
        double_bytes = buffer[pos:new_pos]
        if ((double_bytes[7] in '\x7f\xff') and (double_bytes[6] >= '\xf0') and (double_bytes[0:7] != '\x00\x00\x00\x00\x00\x00\xf0')):
            return (_NAN, new_pos)
        result = local_unpack('<d', double_bytes)[0]
        return (result, new_pos)
    return _SimpleDecoder(wire_format.WIRETYPE_FIXED64, InnerDecode)