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| References | <8b9a5844-66b0-4940-946a-5e626462cdce@googlegroups.com> <mailman.3700.1345713371.4697.python-list@python.org> <b1bd0444-e8ef-4f03-bd69-208e0c550147@googlegroups.com> |
|---|---|
| Date | 2012-08-23 19:29 +1000 |
| Subject | Re: Guarding arithmetic |
| From | Chris Angelico <rosuav@gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.3704.1345714163.4697.python-list@python.org> (permalink) |
On Thu, Aug 23, 2012 at 7:22 PM, Mark Carter <alt.mcarter@gmail.com> wrote:
> OK, so it looks like a solution doesn't exist to the problem as specified. I guess it's something that only a language with macros could accommodate.
You're asking for a function to prevent the evaluation of its
arguments from throwing an error. That's fundamentally not possible
with a function call. Exception handling is a much more normal way of
handling it; though if you prefer, you could wrap it up in a function
like this:
def safe_div(num,denom):
try:
return num/denom
except ZeroDivisionError:
return 42
print safe_div(1,0) # still a poor name though
ChrisA
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Guarding arithmetic Mark Carter <alt.mcarter@gmail.com> - 2012-08-23 02:05 -0700
Re: Guarding arithmetic Chris Angelico <rosuav@gmail.com> - 2012-08-23 19:16 +1000
Re: Guarding arithmetic Mark Carter <alt.mcarter@gmail.com> - 2012-08-23 02:22 -0700
Re: Guarding arithmetic Chris Angelico <rosuav@gmail.com> - 2012-08-23 19:29 +1000
Re: Guarding arithmetic Mark Carter <alt.mcarter@gmail.com> - 2012-08-23 02:22 -0700
Re: Guarding arithmetic Laszlo Nagy <gandalf@shopzeus.com> - 2012-08-23 11:23 +0200
Re: Guarding arithmetic Mark Carter <alt.mcarter@gmail.com> - 2012-08-23 02:47 -0700
Re: Guarding arithmetic Mark Carter <alt.mcarter@gmail.com> - 2012-08-23 02:47 -0700
Re: Guarding arithmetic Laszlo Nagy <gandalf@shopzeus.com> - 2012-08-23 11:28 +0200
Re: Guarding arithmetic Chris Angelico <rosuav@gmail.com> - 2012-08-23 19:30 +1000
Re: Guarding arithmetic Peter Otten <__peter__@web.de> - 2012-08-23 12:11 +0200
Re: Guarding arithmetic rusi <rustompmody@gmail.com> - 2012-08-23 10:15 -0700
Re: Guarding arithmetic Laszlo Nagy <gandalf@shopzeus.com> - 2012-08-23 13:01 +0200
Re: Guarding arithmetic MRAB <python@mrabarnett.plus.com> - 2012-08-23 12:21 +0100
Re: Guarding arithmetic Peter Otten <__peter__@web.de> - 2012-08-23 13:28 +0200
Re: Guarding arithmetic Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-23 15:11 +0100
Re: Guarding arithmetic Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-08-23 14:49 -0400
Re: Guarding arithmetic Chris Angelico <rosuav@gmail.com> - 2012-08-24 07:48 +1000
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