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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_register(self, registeraddress, numberOfDecimals=0, functioncode=3, signed=False):
 """Read an integer from one 16-bit register in the slave, possibly scaling it. The slave register can hold integer values in the range 0 to 65535 ("Unsigned INT16"). Args: * registeraddress (int):
 The slave register address (use decimal numbers, not hex). * numberOfDecimals (int):
 The number of decimals for content conversion. * functioncode (int):
 Modbus function code. Can be 3 or 4. * signed (bool):
 Whether the data should be interpreted as unsigned or signed. If a value of 77.0 is stored internally in the slave register as 770, then use ``numberOfDecimals=1`` which will divide the received data by 10 before returning the value. Similarly ``numberOfDecimals=2`` will divide the received data by 100 before returning the value. Some manufacturers allow negative values for some registers. Instead of an allowed integer range 0 to 65535, a range -32768 to 32767 is allowed. This is implemented as any received value in the upper range (32768 to 65535) is interpreted as negative value (in the range -32768 to -1). Use the parameter ``signed=True`` if reading from a register that can hold negative values. Then upper range data will be automatically converted into negative return values (two's complement). ============== ================== ================ =============== ``signed`` Data type in slave Alternative name Range ============== ================== ================ =============== :const:`False` Unsigned INT16 Unsigned short 0 to 65535 :const:`True` INT16 Short -32768 to 32767 ============== ================== ================ =============== Returns: The register data in numerical value (int or float). Raises: ValueError, TypeError, IOError """

        _checkFunctioncode(functioncode, [3, 4])
        _checkInt(numberOfDecimals, minvalue=0, maxvalue=10, description='number of decimals')
        _checkBool(signed, description='signed')
        return self._genericCommand(functioncode, registeraddress, numberOfDecimals=numberOfDecimals, signed=signed)