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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 update(self, data):
 """Update the chain object with the predefined data."""

        if data is None:
            for device in self.devices:
                device.clear_info()
        else:
            for device, device_info in zip(self.devices, data):
                device.device_info = device_info
                self.connection.log("Device information updated -> [{}]".format(device))