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Groups > comp.lang.python > #82818
| Date | 2014-12-22 18:57 -0500 |
|---|---|
| From | Dave Angel <davea@davea.name> |
| Subject | Re: Program calling unwanted functions |
| References | <b37a93ec-c90b-4375-a264-e96c3128871b@googlegroups.com> <5498808D.60305@davea.name> <CALwzidkPhDPVfw_Gx_cEDPvDmi=1mzda4uJ1HtcdwP39Cw1X_Q@mail.gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.17145.1419292640.18130.python-list@python.org> (permalink) |
On 12/22/2014 06:48 PM, Ian Kelly wrote: > On Dec 22, 2014 2:37 PM, "Dave Angel" <davea@davea.name> wrote: >> >> I'll pick on one function first, called instructions(). If the user > types something invalid, you print "Invalid input." and call the function > again. In this case, because the call is at the end, no harm is usually > done, but it would be tricky to explain why. If the user happened to type > the wrong input 1000 times, you'd hit a recursion limit and crash, but > that's unlikely unless you have a very stubborn user. > > Point of interest, Python (or at least CPython) doesn't optimize tail-call > recursion, so in fact this sort of unbounded recursion (a "stack leak", if > you will) is equally bad no matter where it appears in the function. > Which is exactly why I mentioned the recursion limit of about 1000. -- DaveA
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Program calling unwanted functions Luke Tomaneng <luketomaneng@gmail.com> - 2014-12-22 11:55 -0800
Re: Program calling unwanted functions John Gordon <gordon@panix.com> - 2014-12-22 20:09 +0000
Re: Program calling unwanted functions Dave Angel <davea@davea.name> - 2014-12-22 15:35 -0500
Re: Program calling unwanted functions Ian Kelly <ian.g.kelly@gmail.com> - 2014-12-22 16:48 -0700
Re: Program calling unwanted functions Dave Angel <davea@davea.name> - 2014-12-22 18:57 -0500
Re: Program calling unwanted functions sohcahtoa82@gmail.com - 2014-12-22 16:04 -0800
Re: Program calling unwanted functions Ian Kelly <ian.g.kelly@gmail.com> - 2014-12-22 17:12 -0700
Re: Program calling unwanted functions Dave Angel <davea@davea.name> - 2014-12-22 19:12 -0500
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