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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 read_int(self):
 """Reads an integer from the packet"""

        format = '!I'
        length = struct.calcsize(format)
        info = struct.unpack(format,
                self.data[self.offset:self.offset + length])
        self.offset += length
        return info[0]