How to use the niswitch.attributes.AttributeViString function in niswitch

characteristic_impedance.Session instance, and calling set/get value on the result.:

        session['0,1'].characteristic_impedance = var
        var = session['0,1'].characteristic_impedance
    '''
    continuous_scan = attributes.AttributeViBoolean(1150002)
    '''
    When a switch device is scanning, the swich can either stop scanning when  the end of the scan (VI_FALSE) or continue scanning from the top of the  scan list again (VI_TRUE).
    Notice that if you set the scan to continuous (VI_TRUE), the Wait For Scan  Complete operation will always time out and you must call Abort to stop  the scan.
    '''
    digital_filter_enable = attributes.AttributeViBoolean(1150016)
    '''
    This property specifies whether to apply the pulse width filter to the  Trigger Input. Enabling the Digital Filter (VI_TRUE) prevents the switch  module from being triggered by pulses that are less than 150 ns on PXI  trigger lines 0–7.
    When Digital Filter is disabled (VI_FALSE), it is possible for the switch  module to be triggered by noise on the PXI trigger lines. If the device  triggering the switch is capable of sending pulses greater than 150 ns, you should not disable the Digital Filter.
    '''
    driver_setup = attributes.AttributeViString(1050007)
    '''
    This attribute indicates the Driver Setup string that the user  specified when initializing the driver.
    Some cases exist where the end-user must specify instrument driver  options at initialization time.  An example of this is specifying  a particular instrument model from among a family of instruments  that the driver supports.  This is useful when using simulation.   The end-user can specify driver-specific options through  the DriverSetup keyword in the optionsString parameter to the  niSwitch_InitWithOptions function, or through the IVI Configuration Utility.
    If the user does not specify a Driver Setup string, this attribute returns an empty string.
    '''
    group_capabilities = attributes.AttributeViString(1050401)
    '''
    A string that contains a comma-separated list of class-extention groups that  this driver implements.
    '''
    handshaking_initiation = attributes.AttributeEnum(attributes.AttributeViInt32, enums.HandshakingInitiation, 1150013)
    instrument_firmware_revision = attributes.AttributeViString(1050510)
    '''
    A string that contains the firmware revision information  for the instrument you are currently using.
    '''
    instrument_manufacturer = attributes.AttributeViString(1050511)
    '''

'''
    The minor version number of the class specification with which this driver is compliant.
    '''
    specific_driver_description = attributes.AttributeViString(1050514)
    '''
    A string that contains a brief description of the specific  driver.
    '''
    specific_driver_revision = attributes.AttributeViString(1050551)
    '''
    A string that contains additional version information about this  instrument driver.
    '''
    specific_driver_vendor = attributes.AttributeViString(1050513)
    '''
    A string that contains the name of the vendor that supplies this driver.
    '''
    supported_instrument_models = attributes.AttributeViString(1050327)
    '''
    Contains a comma-separated list of supported instrument models.
    '''
    temperature = attributes.AttributeViReal64(1150019)
    '''
    This attribute returns the temperature as read by the Switch module.     The units are degrees Celsius.
    '''
    trigger_input = attributes.AttributeEnum(attributes.AttributeViInt32, enums.TriggerInput, 1250022)
    '''
    This attribute specifies the source of the trigger for which the switch  device can wait when processing a scan list.  The switch device waits for  a trigger when it encounters a semi-colon in a scan list.  When the trigger  occurs, the switch device advances to the next entry in the scan list.
    '''
    trigger_input_polarity = attributes.AttributeEnum(attributes.AttributeViInt32, enums.TriggerInputPolarity, 1150010)
    '''
    Determines the behavior of the trigger Input.
    '''
    trigger_mode = attributes.AttributeViInt32(1150005)

-> (a dash followed by a '>' sign)
    Example:  'CH1->CH2' tells the switch to make a path from channel CH1 to channel  CH2.
    To break or clear a path, use the following character as a prefix before  the path:
    ~ (tilde)
    Example:  '~CH1->CH2' tells the switch to break the path from channel CH1 to  channel CH2.
    To tell the switch device to wait for a trigger event, use the following  character as a separator between paths:
    ; (semi-colon)
    Example:  'CH1->CH2;CH3->CH4' tells the switch to make the path from channel CH1  to channel CH2, wait for a trigger, and then make the path from CH3 to  CH4.
    '''
    scan_mode = attributes.AttributeEnum(attributes.AttributeViInt32, enums.ScanMode, 1250021)
    '''
    This attribute specifies what happens to existing connections that  conflict with the connections you make in a scan list.  For example, if  CH1 is already connected to CH2 and the scan list instructs the switch  device to connect CH1 to CH3, this attribute specifies what happens to the  connection between CH1 and CH2.
    If the value of this attribute is NISWITCH_VAL_NONE, the switch device  takes no action on existing paths.  If the value is  NISWITCH_VAL_BREAK_BEFORE_MAKE, the switch device breaks conflicting paths  before making new ones.  If the value is NISWITCH_VAL_BREAK_AFTER_MAKE,  the switch device breaks conflicting paths after making new ones.
    Most switch devices support only one of the possible values.  In such  cases, this attribute serves as an indicator of the device's behavior.
    '''
    serial_number = attributes.AttributeViString(1150015)
    '''
    This read-only attribute returns the serial number for the switch device  controlled by this instrument driver.  If the device does not return a  serial number, the driver returns the IVI_ERROR_ATTRIBUTE_NOT_SUPPORTED error.
    '''
    settling_time = attributes.AttributeViReal64(1250004)
    '''
    This channel-based attribute returns the maximum length of time from after  you make a connection until the signal flowing through the channel  settles. The units are seconds.
    the greater value of the settling time and the value you specify as the  scan delay.

    Note: NI PXI-2501/2503/2565/2590/2591 Users--the actual delay will always be

    Tip:
    This property can use repeated capabilities (usually channels). If set or get directly on the
    settling_time.Session object, then the set/get will use all repeated capabilities in the session.
    You can specify a subset of repeated capabilities using the Python index notation on an
    settling_time.Session instance, and calling set/get value on the result.:

'''
    The major version number of the IviSwtch class specification.
    '''
    specific_driver_class_spec_minor_version = attributes.AttributeViInt32(1050516)
    '''
    The minor version number of the class specification with which this driver is compliant.
    '''
    specific_driver_description = attributes.AttributeViString(1050514)
    '''
    A string that contains a brief description of the specific  driver.
    '''
    specific_driver_revision = attributes.AttributeViString(1050551)
    '''
    A string that contains additional version information about this  instrument driver.
    '''
    specific_driver_vendor = attributes.AttributeViString(1050513)
    '''
    A string that contains the name of the vendor that supplies this driver.
    '''
    supported_instrument_models = attributes.AttributeViString(1050327)
    '''
    Contains a comma-separated list of supported instrument models.
    '''
    temperature = attributes.AttributeViReal64(1150019)
    '''
    This attribute returns the temperature as read by the Switch module.     The units are degrees Celsius.
    '''
    trigger_input = attributes.AttributeEnum(attributes.AttributeViInt32, enums.TriggerInput, 1250022)
    '''
    This attribute specifies the source of the trigger for which the switch  device can wait when processing a scan list.  The switch device waits for  a trigger when it encounters a semi-colon in a scan list.  When the trigger  occurs, the switch device advances to the next entry in the scan list.
    '''
    trigger_input_polarity = attributes.AttributeEnum(attributes.AttributeViInt32, enums.TriggerInputPolarity, 1150010)

'''
    This property specifies whether to apply the pulse width filter to the  Trigger Input. Enabling the Digital Filter (VI_TRUE) prevents the switch  module from being triggered by pulses that are less than 150 ns on PXI  trigger lines 0–7.
    When Digital Filter is disabled (VI_FALSE), it is possible for the switch  module to be triggered by noise on the PXI trigger lines. If the device  triggering the switch is capable of sending pulses greater than 150 ns, you should not disable the Digital Filter.
    '''
    driver_setup = attributes.AttributeViString(1050007)
    '''
    This attribute indicates the Driver Setup string that the user  specified when initializing the driver.
    Some cases exist where the end-user must specify instrument driver  options at initialization time.  An example of this is specifying  a particular instrument model from among a family of instruments  that the driver supports.  This is useful when using simulation.   The end-user can specify driver-specific options through  the DriverSetup keyword in the optionsString parameter to the  niSwitch_InitWithOptions function, or through the IVI Configuration Utility.
    If the user does not specify a Driver Setup string, this attribute returns an empty string.
    '''
    group_capabilities = attributes.AttributeViString(1050401)
    '''
    A string that contains a comma-separated list of class-extention groups that  this driver implements.
    '''
    handshaking_initiation = attributes.AttributeEnum(attributes.AttributeViInt32, enums.HandshakingInitiation, 1150013)
    instrument_firmware_revision = attributes.AttributeViString(1050510)
    '''
    A string that contains the firmware revision information  for the instrument you are currently using.
    '''
    instrument_manufacturer = attributes.AttributeViString(1050511)
    '''
    A string that contains the name of the instrument manufacturer you are currently  using.
    '''
    instrument_model = attributes.AttributeViString(1050512)
    '''
    A string that contains the model number or name of the instrument that you  are currently using.
    '''
    interchange_check = attributes.AttributeViBoolean(1050021)
    '''
    Specifies whether to perform interchangeability checking and retrieve  interchangeability warnings when you call  niSwitch_Connect, niSwitch_SetPath and niSwitch_InitiateScan functions.
    The default value is VI_FALSE.
    Interchangeability warnings indicate that using your application with a  different instrument might cause different behavior.   You call niSwitch_GetNextInterchangeWarning to extract interchange warnings.   Call the niSwitch_ClearInterchangeWarnings function to clear the list  of interchangeability warnings without reading them.

Specifies whether the IVI engine keeps a list of  the value coercions it makes for ViInt32 and ViReal64 attributes.   You call niSwitch_GetNextCoercionRecord to extract and delete the oldest  coercion record from the list.
    The default value is VI_FALSE.   Use the  niSwitch_InitWithOptions function to override this value.
    '''
    scan_advanced_output = attributes.AttributeEnum(attributes.AttributeViInt32, enums.ScanAdvancedOutput, 1250023)
    '''
    This attribute specifies the method you want to use to notify another  instrument that all signals going through the switch device have settled  following the processing of one entry in the scan list.
    '''
    scan_advanced_polarity = attributes.AttributeEnum(attributes.AttributeViInt32, enums.ScanAdvancedPolarity, 1150011)
    scan_delay = attributes.AttributeViReal64(1250025)
    '''
    This attribute specifies the minimum amount of time the switch device  waits before it asserts the scan advanced output trigger after opening or  closing the switch.  The switch device always waits for debounce before  asserting the trigger. The units are seconds.
    the greater value of the settling time and the value you specify as the  scan delay.

    Note: NI PXI-2501/2503/2565/2590/2591 Users--the actual delay will always be
    '''
    scan_list = attributes.AttributeViString(1250020)
    '''
    This attribute contains a scan list, which is a string that specifies  channel connections and trigger conditions.  The niSwitch_InitiateScan  function makes or breaks connections and waits for triggers according to  the instructions in the scan list.
    The scan list is comprised of channel names that you separate with  special characters.  These special characters determine the operations the  scanner performs on the channels when it executes this scan list.
    To create a path between two channels, use the following character between  the two channel names:
    -> (a dash followed by a '>' sign)
    Example:  'CH1->CH2' tells the switch to make a path from channel CH1 to channel  CH2.
    To break or clear a path, use the following character as a prefix before  the path:
    ~ (tilde)
    Example:  '~CH1->CH2' tells the switch to break the path from channel CH1 to  channel CH2.
    To tell the switch device to wait for a trigger event, use the following  character as a separator between paths:
    ; (semi-colon)
    Example:  'CH1->CH2;CH3->CH4' tells the switch to make the path from channel CH1  to channel CH2, wait for a trigger, and then make the path from CH3 to  CH4.
    '''
    scan_mode = attributes.AttributeEnum(attributes.AttributeViInt32, enums.ScanMode, 1250021)
    '''
    This attribute specifies what happens to existing connections that  conflict with the connections you make in a scan list.  For example, if  CH1 is already connected to CH2 and the scan list instructs the switch  device to connect CH1 to CH3, this attribute specifies what happens to the  connection between CH1 and CH2.

This channel-based attribute specifies whether you want to identify the  channel as a source channel.  Typically, you set this attribute to VI_TRUE  when you attach the channel to a power supply, a function generator, or an  active measurement point on the unit under test, and you do not want to  connect the channel to another source.  The driver prevents source  channels from connecting to each other.  The niSwitch_Connect function  returns the NISWITCH_ERROR_ATTEMPT_TO_CONNECT_SOURCES when you attempt to  connect two channels that you identify as source channels.

    Tip:
    This property can use repeated capabilities (usually channels). If set or get directly on the
    is_source_channel.Session object, then the set/get will use all repeated capabilities in the session.
    You can specify a subset of repeated capabilities using the Python index notation on an
    is_source_channel.Session instance, and calling set/get value on the result.:

        session['0,1'].is_source_channel = var
        var = session['0,1'].is_source_channel
    '''
    is_waiting_for_trig = attributes.AttributeViBoolean(1150004)
    '''
    In a scan list, a semi-colon (;) is used to indicate that at that point in  the scan list, the scan engine should pause until a trigger is received  from the trigger input.  If that trigger is user generated through either  a hardware pulse or the Send SW Trigger operation, it is necessary for the  user to know  when the scan engine has reached such a state.
    '''
    logical_name = attributes.AttributeViString(1050305)
    '''
    A string containing the logical name you specified when opening the  current IVI session.
    You may pass a logical name to the niSwitch_init or  niSwitch_InitWithOptions functions.   The IVI Configuration utility must contain an entry for the logical name.   The logical name entry refers to a virtual instrument section in the  IVI Configuration file.  The virtual instrument section specifies a physical  device and initial user options.
    '''
    master_slave_scan_advanced_bus = attributes.AttributeViInt32(1150007)
    '''
    This attribute has been deprecated and may be removed from a future release of  NI-SWITCH.  Use the niSwitch_RouteScanAdvancedOutput function instead.
    '''
    master_slave_trigger_bus = attributes.AttributeViInt32(1150006)
    '''
    This attribute has been deprecated and may be removed from a future release of  NI-SWITCH.  Use the niSwitch_RouteTriggerInput function instead.
    '''
    max_ac_voltage = attributes.AttributeViReal64(1250007)
    '''
    This channel-based attribute returns the maximum AC voltage the channel  can switch.
    The units are volts RMS.

var = session['0,1'].settling_time
    '''
    simulate = attributes.AttributeViBoolean(1050005)
    '''
    Specifies whether or not to simulate instrument driver I/O operations.  If  simulation is enabled, instrument driver functions perform range checking  and call Ivi_GetAttribute and Ivi_SetAttribute functions, but they do not  perform instrument I/O.  For output parameters that represent instrument  data, the instrument driver functions return calculated values.
    The default value is VI_FALSE.   Use the niSwitch_InitWithOptions  function to override this value.
    '''
    specific_driver_class_spec_major_version = attributes.AttributeViInt32(1050515)
    '''
    The major version number of the IviSwtch class specification.
    '''
    specific_driver_class_spec_minor_version = attributes.AttributeViInt32(1050516)
    '''
    The minor version number of the class specification with which this driver is compliant.
    '''
    specific_driver_description = attributes.AttributeViString(1050514)
    '''
    A string that contains a brief description of the specific  driver.
    '''
    specific_driver_revision = attributes.AttributeViString(1050551)
    '''
    A string that contains additional version information about this  instrument driver.
    '''
    specific_driver_vendor = attributes.AttributeViString(1050513)
    '''
    A string that contains the name of the vendor that supplies this driver.
    '''
    supported_instrument_models = attributes.AttributeViString(1050327)
    '''
    Contains a comma-separated list of supported instrument models.
    '''
    temperature = attributes.AttributeViReal64(1150019)

'''
    When a switch device is scanning, the swich can either stop scanning when  the end of the scan (VI_FALSE) or continue scanning from the top of the  scan list again (VI_TRUE).
    Notice that if you set the scan to continuous (VI_TRUE), the Wait For Scan  Complete operation will always time out and you must call Abort to stop  the scan.
    '''
    digital_filter_enable = attributes.AttributeViBoolean(1150016)
    '''
    This property specifies whether to apply the pulse width filter to the  Trigger Input. Enabling the Digital Filter (VI_TRUE) prevents the switch  module from being triggered by pulses that are less than 150 ns on PXI  trigger lines 0–7.
    When Digital Filter is disabled (VI_FALSE), it is possible for the switch  module to be triggered by noise on the PXI trigger lines. If the device  triggering the switch is capable of sending pulses greater than 150 ns, you should not disable the Digital Filter.
    '''
    driver_setup = attributes.AttributeViString(1050007)
    '''
    This attribute indicates the Driver Setup string that the user  specified when initializing the driver.
    Some cases exist where the end-user must specify instrument driver  options at initialization time.  An example of this is specifying  a particular instrument model from among a family of instruments  that the driver supports.  This is useful when using simulation.   The end-user can specify driver-specific options through  the DriverSetup keyword in the optionsString parameter to the  niSwitch_InitWithOptions function, or through the IVI Configuration Utility.
    If the user does not specify a Driver Setup string, this attribute returns an empty string.
    '''
    group_capabilities = attributes.AttributeViString(1050401)
    '''
    A string that contains a comma-separated list of class-extention groups that  this driver implements.
    '''
    handshaking_initiation = attributes.AttributeEnum(attributes.AttributeViInt32, enums.HandshakingInitiation, 1150013)
    instrument_firmware_revision = attributes.AttributeViString(1050510)
    '''
    A string that contains the firmware revision information  for the instrument you are currently using.
    '''
    instrument_manufacturer = attributes.AttributeViString(1050511)
    '''
    A string that contains the name of the instrument manufacturer you are currently  using.
    '''
    instrument_model = attributes.AttributeViString(1050512)
    '''
    A string that contains the model number or name of the instrument that you  are currently using.
    '''