> Of course they are, but if that's the case a function that returns to
> you the value computed is probably of more interest:
No, that's useless.
The use case is you have a loop like
for x in manyitems:
timeconsumingprocess(x)
and then you just get a blank line at your terminal for a while. You
can change it to:
for x in yournamehere(manyitems):
and then you get useful status updates.
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