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@cached_property def my_collection(): return [1, 2, 3] def do_stuff(): for i in my_collection: print i

I try to cache a list, set or map that I can iterate on. However, doing that, I get TypeError: 'cached_property' object is not iterable. Any other workarounds?

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  • Are you referring to the django cached_property util? Commented May 3, 2017 at 1:04
  • Yes............ Commented May 3, 2017 at 1:06

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The reason is you are trying to apply this decorator to a function, but it makes no sense, because it's designed for instance methods. This will work:

class Foo: @cached_property def my_collection(self): return [1, 2, 3] def do_stuff(): for i in Foo().my_collection: print i
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