[IronPython] Constructors & inheriting from standard .NET classes

Zach Crowell zachc at microsoft.com
Sat Aug 22 01:38:37 CEST 2009

I am unable to inherit from .NET classes which do not define a parameterless constructor.  Is this expected behavior? Is there another way to make this inheritance work?

Here's a simple case.

using System;

namespace Test
    public class Base
        public Base(int i)

import clr
import Test

class Derived(Test.Base):
    def __init__(self):

d = Derived()

Traceback (most recent call last):
  File "d:\tmp\class.py", line 9, in d:\tmp\class.py
TypeError: Derived() takes exactly 2 arguments (1 given)
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