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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 unpack(self, unpacker):
 """ unpacks a code block from a buffer. Updates the internal structure of this instance """


        (a, b, c) = unpacker.unpack_struct(_HHI)

        self.max_stack = a
        self.max_locals = b
        self.code = unpacker.read(c)

        uobjs = unpacker.unpack_objects
        self.exceptions = tuple(uobjs(JavaExceptionInfo, self))

        self.attribs.unpack(unpacker)