Stefan Behnel <stefan...@behnel.de> added the comment:

I'm generally ok with such APIs. It seems needless to require

  @lru_cache()
  def f(): ...

when a simple decorator would suffice. I think I might decide otherwise in 
cases where almost all usages require arguments, but if the no-arguments case 
is common (and there is no ambiguity in the arguments), then I prefer not 
requiring parentheses.

----------
nosy: +scoder

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue36772>
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