On Wed, Dec 5, 2012 at 1:52 PM, Nathaniel Smith <[email protected]> wrote: > If you're defining your own warning class, you might consider using > FutureWarning instead of UserWarning. > > We had a discussion about this issue for numpy recently: > http://mail.scipy.org/pipermail/numpy-discussion/2012-May/062460.html > What we eventually ended up with: > http://mail.scipy.org/pipermail/numpy-discussion/2012-May/062468.html
Thanks for the pointers, Nathaniel. Though I think I disagree with continuing to use DeprecationWarnings for features that will go away and just break code - shouldn't users be given ample opportunity of coming changes without having to find out by having their code break at a future release? Robert Kern wrote: > Using FutureWarning for deprecated functions (i.e. functions that will > disappear in future releases) is an abuse of the semantics. > FutureWarning is for things like the numpy.histogram() changes from a > few years ago: changes in default arguments that will change the > semantics of a given function call. Some of our DeprecationWarnings > possibly should be FutureWarnings, but most shouldn't I don't think. then Nathaniel summarized: > If a function or similar will just disappear in a future release, > causing obvious failures in any code that depends on it, then > DeprecationWarning is fine. People's code will unexpectedly break from > time to time, but in safe ways, and anyway downgrading is easy. > - Otherwise FutureWarning is preferred And most of our DeprecationWarnings *are* about code that will just disappear in future releases. -- Paul Ivanov 314 address only used for lists, off-list direct email at: http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7> ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Matplotlib-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
