On 07/10/2013 02:01 PM, Nachi Ueno wrote:
HI folks
I would like to ask the review criteria in the community.
Should we use exception for non-exceptional cases when we can use
parameter checking?
Example1: Default value for array index
try:
value = list[5]
except IndexError:
value = 'default_value'
This can be also written as,
list_a[3] if len(list_a) > 3 else 'default_value'
Both of these are fine. Neither deserves to be banned.
But LBYL is often naive in the face of concurrency. Just because
something was true a microsecond ago doesn't mean it's still true.
Exceptions are often more robust.
--
David Ripton Red Hat drip...@redhat.com
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