I love assert
rgaddi at technologyhighland.invalid
Tue Nov 11 21:20:37 CET 2014
On Tue, 11 Nov 2014 11:40:38 -0800 (PST)
Peter Cacioppi <peter.cacioppi at gmail.com> wrote:
> I get the impression that most Pythonistas aren't as habituated with assert statements as I am. Is that just a misimpression on my part? If not, is there a good reason to assert less with Python than other languages?
> As far as I can tell, Python supports assert perfectly well. When run with the optimization flagging, the asserts are truly removed.
> I think one needs to take care with some basic assert coding - it's not a substitute for unit tests, it doesn't absolve you of normal exception responsibilities, and, most of all, it should be used for passive inspection and not action. But given these guidelines, I still find it very useful as "active comments".
I tend to be a big fan, but it is easy to forget about the one big rake
assert leaves in your lawn. You CAN NOT use an assert with any
function that has a side effect or you break everything.
That line there is pretty obvious about what's going on, but with the
ability to turn class data members transparently into properties, using
asserts safely actually requires a shocking amount of self-discipline.
assert obj.read_accesses < 10
Rob Gaddi, Highland Technology -- www.highlandtechnology.com
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