Decorator cllass hides docstring from doctest?

[Duncan Booth]

berthold at despammed.com (Berthold =?iso-8859-15?Q?H=F6llmann?=) wrote:

> Saving the following code to a file and running the code through
> python does not give the expected error. disableling the "@decor" line
> leads to the expected error message. Is this a bug or an overseen
> feature?
> 
It's a problem with your implementation of the decorator. In fact it is two 
problems: the decorated 'f' is a class instance so doctest ignores it, and 
it doesn't have a docstring so doctest ignores it.

If you rewrite the decorator so that the decorated 'f' is still a function 
and preserve the docstring then it works as you might expect. e.g.

def decor(f):
    def wrapper(*args, **kw):
        return f(*args, **kw)
    wrapper.__doc__ = f.__doc__
    wrapper.__name__ = f.__name__
    return wrapper