@ChrisA: Shadowing "iter()" would only help with Barry's example.
@Jonathan: Updating documentation is helpful, but I find an automated check
better. Too often the most obvious way to accomplish something silently
triggers this behavior:
strings = ['aa', '', 'bbb', 'c']
strings = filter(bool, strings) # Adding this step makes n_unique always 0.
longest = max(strings, key=len)
n_unique = len(set(strings))
I feel like a warning here would save time and prevent bugs, and that my
is_exhausted proposal, if implemented directly in the generators, is an easy
way to accomplish this.
And I have to say I'm surprised by the responses. Does nobody else hit bugs
like this and wish they were automatically detected? To be clear, raising
ValueError is just an example; logging a warning would already be helpful, like
Go's race condition detector.
--
BoppreH
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