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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 decode (cls, bytes, cmddict=None):
 """Decodes a sequence delay from an array of bytes, according to the given command dictionary, and returns a new SeqDelay. """

    delay_s  = struct.unpack('>H', bytes[0:2])[0]
    delay_ms = struct.unpack('B' , bytes[2:3])[0]
    return cls(delay_s + (delay_ms / 255.0))