cascading python executions only if return code is 0
ethan at stoneleaf.us
Mon Dec 23 13:38:23 CET 2013
On 12/22/2013 06:33 PM, Steven D'Aprano wrote:
> Roy Smith wrote:
>> assert 0, "can't create picker (classes = %s)" % classes
> ¡Ay, caramba! I was with you until the very last line. The above code is
> possibly buggy and inappropriately designed. [...]
> First, the bug: there are circumstances where no exception is raised even if
> all the strategies fail.
Since Steven wasn't explicit about the circumstances, I'll list the two I'm aware of: if Python is started with -O or
-OO then assertions are cut from the code and do not run:
ethan at media:~/source/python/issue19995$ ./python -O
Python 3.4.0b1 (default:be22ffb4fdf1, Dec 20 2013, 12:26:10)
[GCC 4.7.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
--> assert 0, "Testing"
--> # no exception raised
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