On Sun, Aug 22, 2021 at 07:01:28PM +0300, Serhiy Storchaka wrote:

>     (len(collection) == 0) is True

Ha ha, yes, very good, you got me. But the trouble is, if you don't
trust the truth value of the predicate, it is hard to know when to
stop:

    len(collection) == 0
    (len(collection) == 0) is True
    ((len(collection) == 0) is True) is True
    (((len(collection) == 0) is True) is True) is True
    ((((len(collection) == 0) is True) is True)) is True
    # ...

*wink*

MRAB and Ricky:

`__builtins__` is a CPython implementation detail and is reserved for
the interpreter's private use. Other implementations may not even have
it. The right way to write your code should be

    import builtins
    builtins.bool((builtins.len(collection) == 0) is True) is True


--
Steve
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