CODEWITHSUNDEEP
c#pythondllinterface
Vasanth Rajasekaran
Vasanth Rajasekaran

Reputation: 31

'NoneType' object is not callable when calling a function written in C# from Python

I'm a newbie to Python and C#. I'm trying to make a dll in C# with two methods implemented as interface, and call them in python file after registering in COM.

namespace Sample
{
    public interface interf
    {
        bool printHello(string name);

        void printWorld();

    }

    public class A : interf
    {

        public bool printHello(string name)
        {
            Console.WriteLine(name);
            return true;
        }


        public void printWorld()
        {
            Console.WriteLine("World!");
        }
    }
}

I'm calling these functions in python as:

import win32com.client

dllCall = win32com.client.Dispatch("Sample.A")
hello = dllCall.printHello("Hello")
dllCall.printWorld()

I'm getting the following error when I try to execute the python file.

Hello
Traceback (most recent call last):
  File "C:\Temp\sampleTest.py", line 23, in <module>
World!
    dllCall.printWorld()
TypeError: 'NoneType' object is not callable

What is that I'm missing?

Upvotes: 2

Views: 766

Answers (1)

Vasanth Rajasekaran
Vasanth Rajasekaran

Reputation: 31

Finally I got it working. If I call printWorld without brackets ().

dllCall.printWorld

Upvotes: 1

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