Why no warnings when re-assigning builtin names?
tjreedy at udel.edu
Wed Aug 17 04:10:30 CEST 2011
On 8/16/2011 7:49 PM, Seebs wrote:
> On 2011-08-16, Terry Reedy<tjreedy at udel.edu> wrote:
>> On 8/16/2011 2:56 PM, Seebs wrote:
>>> I wonder whether there's a way to mitigate the cost of these things by
>>> messing with -W settings, such that runtime that wants to be fast can
>>> omit the checks, but the default could still be to, well, prevent likely
>> Warning messages have a cost even if suppressed.
> Yes, but is it a *significant* cost? My assumption is that the suppression
> would be of checking, not just of displaying messages.
The -W settings suppress display or printing of warnings, not their
The test and warn call are made regardless of disposition. Filters
determine what is done with each Warning subclass. The logging module
can grab them too.
Terry Jan Reedy
More information about the Python-list