> In fact, you've got None referenced by both "my" and "c" in this
> example, and in a more complicated program None will be referenced by
> dozens symbols because it's unique [e.g. (a == None, b == None)
> necessitates (a is b) == True]

Even worse: freshly started 2.2 interpreter:
>>> sys.getrefcount(None)
216

TJR



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