Dynamically creating classes - Python

Question

I need to dynamically create a class. To go in futher detail I need to dynamically create a subclass of Django's Form class.

By "dynamically" I intend to create a class based on configuration provided by a user.

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e.g.

I want a class named CommentForm which should subclass the Form class.

The class should have a list of chosen attributes.

....in this case

name = forms.CharField() comment = forms.CharField(widget=forms.Textarea()) 

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Any useful tips? :)

Answer 1

You can create classes on the fly by calling the type built-in, passing appropriate arguments along, like:

CommentForm = type("CommentForm", (Form,), {      'name': forms.CharField(),     ... }) 

It works with new-style classes. I am not sure, whether this would also work with old-style classes.