Calling Python Class Methods Using LabVIEW Python Node

Updated Jul 19, 2022

Reported In


  • LabVIEW 2018

Operating System

  • Windows

Programming Language

  • Python


Python 2.7

Issue Details

How can I call python class methods defined in my python script using the LabVIEW python node ?


Unfortunately, there is no direct way to call python class methods using the LabVIEW 2018 python node. However, you can implement a wrapper function in your python script which then can be called using the python node. An example of such a wrapper functionality could look like this:
  • Python script
#define class
class myClass(object):
    def __init__(self, parameter):
        self.__Parameter = parameter
    def GetValue(self):
        return self.__Parameter

#define wrapper for LabVIEW Python node        
def getClassData():
    newClassObject = myClass(4882)
    return newClassObject.GetValue() 
  • LabVIEW 2018 block diagram to call the wrapper function

Note: This image is a LabVIEW snippet, which includes LabVIEW code that you can reuse in your project. To use a snippet, right-click the image, save it to your computer, and drag the file onto your LabVIEW diagram.