How to use the niswitch.visatype.ViReal64 function in niswitch

def __init__(self, expected_value):
        _ScalarMatcher.__init__(self, visatype.ViReal64, expected_value)

def __init__(self):
        _PointerMatcher.__init__(self, visatype.ViReal64)

def __init__(self, expected_size_or_value):
        _BufferMatcher.__init__(self, visatype.ViReal64, expected_size_or_value)

constants as valid values, you can view the constants by moving to the
                Attribute Value control and pressing .

            attribute_value (float): Pass the value to which you want to set the attribute. From the function
                panel window, you can use this control as follows. - If the attribute
                currently showing in the Attribute ID ring control has constants as
                valid values, you can view a list of the constants by pressing on this
                control. Select a value by double-clicking on it or by selecting it and
                then pressing . Note: Some of the values might not be valid depending on
                the current settings of the instrument session. Default Value: none

        '''
        vi_ctype = visatype.ViSession(self._vi)  # case S110
        channel_name_ctype = ctypes.create_string_buffer(self._repeated_capability.encode(self._encoding))  # case C010
        attribute_id_ctype = visatype.ViAttr(attribute_id)  # case S150
        attribute_value_ctype = visatype.ViReal64(attribute_value)  # case S150
        error_code = self._library.niSwitch_SetAttributeViReal64(vi_ctype, channel_name_ctype, attribute_id_ctype, attribute_value_ctype)
        errors.handle_error(self, error_code, ignore_warnings=False, is_error_handling=False)
        return

a list of valid values.

            scan_delay (float): The minimum length of time you want the switch device to wait after it
                creates a path until it asserts a trigger on the scan advanced output
                line. The driver uses this value to set the Scan Delay attribute. The
                scan delay is in addition to the settling time.The driver uses this
                value to set the scan_delay attribute. Express this
                value in seconds. Default value: 0.0 s

        '''
        if type(trigger_input) is not enums.TriggerInput:
            raise TypeError('Parameter mode must be of type ' + str(enums.TriggerInput))
        if type(scan_advanced_output) is not enums.ScanAdvancedOutput:
            raise TypeError('Parameter mode must be of type ' + str(enums.ScanAdvancedOutput))
        vi_ctype = visatype.ViSession(self._vi)  # case S110
        scan_delay_ctype = visatype.ViReal64(scan_delay)  # case S150
        trigger_input_ctype = visatype.ViInt32(trigger_input.value)  # case S130
        scan_advanced_output_ctype = visatype.ViInt32(scan_advanced_output.value)  # case S130
        error_code = self._library.niSwitch_ConfigureScanTrigger(vi_ctype, scan_delay_ctype, trigger_input_ctype, scan_advanced_output_ctype)
        errors.handle_error(self, error_code, ignore_warnings=False, is_error_handling=False)
        return

constants by moving to the Attribute Value control and pressing .


        Returns:
            attribute_value (float): Returns the current value of the attribute. Pass the address of a
                ViReal64 variable. From the function panel window, you can use this
                control as follows. - If the attribute currently showing in the
                Attribute ID ring control has constants as valid values, you can view a
                list of the constants by pressing on this control. Select a value by
                double-clicking on it or by selecting it and then pressing .

        '''
        vi_ctype = visatype.ViSession(self._vi)  # case S110
        channel_name_ctype = ctypes.create_string_buffer(self._repeated_capability.encode(self._encoding))  # case C010
        attribute_id_ctype = visatype.ViAttr(attribute_id)  # case S150
        attribute_value_ctype = visatype.ViReal64()  # case S200
        error_code = self._library.niSwitch_GetAttributeViReal64(vi_ctype, channel_name_ctype, attribute_id_ctype, None if attribute_value_ctype is None else (ctypes.pointer(attribute_value_ctype)))
        errors.handle_error(self, error_code, ignore_warnings=False, is_error_handling=False)
        return float(attribute_value_ctype.value)