How to use iron python to call python functions in VB:

Sheerak M

1 min read

·

Oct 6, 2023

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You should follow these steps:

· First you need to download Iron Python from https://ironpython.net/download/

· Then in visual studio in your solutions directory you need to add the iron python dll’s (from the location you places them in the previous steps) as references.

. Now you can call your python functions from your python scripts in your VB code as follows:

Example of driver VB code:

I create a VB console application called Module1.vb as follows:

Imports System
Imports Microsoft.Scripting.Hosting
Imports IronPython.Hosting

Module Module1

    Sub Main()
        Console.WriteLine("Called from VB")
        Dim pyEngine As ScriptEngine = Python.CreateEngine()
        Dim scope As ScriptScope = pyEngine.CreateScope()

        ' the script you gonna call n
        pyEngine.ExecuteFile("pythonfile.py", scope)

        ' get the name of the class or function 
        Dim workingMethod As Object = scope.GetVariable("print_hello")
        Dim result As Object = workingMethod()   'actually calling the function 
        Console.WriteLine(result)  ' printing hte results to the console 
    End Sub

End Module

Python code called pythonfile.py that is being called from VB:

Pythonfile.py:

def print_hello():
 print("Hello World!")
 import time
 time.sleep(10)
 return 1
 input()

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