The key is to define namespace, why is also different behavior from ironpython:
Python 2.7.9 |Continuum Analytics, Inc.| (default, Dec 12 2014, 14:56:54) [MSC v .1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. Anaconda is brought to you by Continuum Analytics. Please check out:http://continuum.io/thanks andhttps://binstar.org >>> import clr Attempting to load Python.Runtime using standard binding rules... Attempting to load Python.Runtime from: 'C:\Python\Python27\lib\site-packages\Py thon.Runtime.dll'... >>> import System >>> class ViewModel(System.ComponentModel.INotifyPropertyChanged): ... __namespace__="blabla" ... def __init__(self): ... pass ... >>> ViewModel() <__main__.ViewModel object at 0x028784B0> On Sunday, March 13, 2016, Hansong Huang <hhsp...@pine.cc> wrote: > I am attempting to implement a MVVM WPF application in Python.Net. > > The ViewModel class needs to implement the INotifyPropertyChanged > interface. > > class ViewModel(System.ComponentModel.INotifyPropertyChanged): > def __init__(self): > pass > > vm = ViewModel() > > gives exception: > "TypeError: interface takes exactly one argument" > > I am not sure what is the reason. > > I remember a post last year saying the the interface inheritance is > implemented in a development brand and not integrated into main branch. not > sure if it is the reason. > > I am using python 2.1.0.dev1. > > thanks > > > >
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