Is it possible to have a Python class decorator with arguments?

Your arg_cache definition needs to do something like: def arg_cache(cthis, cthat, cthisandthat): def f(obj): obj. Cache_this = cthis obj. Cache_that = cthat obj.

Thisandthat = cthisandthat return obj return f @arg_cache(cache_this, cache_that, cache_this_and_that) The example assumes you just want to set some properties on the decorated class. You could of course do something else with the three parameters.

Your arg_cache definition needs to do something like: def arg_cache(cthis, cthat, cthisandthat): def f(obj): obj. Cache_this = cthis obj. Cache_that = cthat obj.

Thisandthat = cthisandthat return obj return f @arg_cache(cache_this, cache_that, cache_this_and_that) ... The example assumes you just want to set some properties on the decorated class. You could of course do something else with the three parameters.

In my opinion it would have been better to have named the argument to the nested function something more descriptive, like f(cls). A little more in the way of an explanation would have been nice, too. – martineau Nov 24 '10 at 10:12.

Write a callable that returns an appropriate decorator.

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