Re: [Python-Dev] PEP 409 and the stdlib

[Serhiy Storchaka]

21.05.13 13:05, Hrvoje Niksic написав(ла):
On 05/21/2013 11:56 AM, Serhiy Storchaka wrote:
try:
      x = d['key']
except KeyError:
      x = fallback('key')
def fallback(key):
      if key not in a:
          raise BusinessError(...)
      return 1 / a[key] # possible TypeError, ZeroDivisionError, etc

Yes, in that case the exception will appear unintentional and you get
the old message — it's on a best-effort basis.

In both cases the BusinessError exception raised explicitly. How do you 
distinguish one case from another?


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