On Fri, Jul 20, 2012 at 3:20 PM, Eric Firing <efir...@hawaii.edu> wrote: > This would be defeating the basic idea: use() is *only* designed to take > effect *once*. If you need to switch backends, it takes more than what > use() does, hence the need for switch_backend(). (But see below.) > > The warn=False invocation of use, with the return statement were it is > now, is for the case where you may have a script or module that > specifies a backend (in case it is the first or only import of > matplotlib), but that may itself be imported or called by something else > that has already imported matplotlib and set the backend. In this case > we want the warning to be suppressed, which is all the warn=False flag > is supposed to do. I use this myself. > > So it looks like the problem is that switch_backends is broken because > what it needs matplotlib.use to do is go ahead and make the switch. This > could be done by adding a force=True kwarg (default would be False) to > matplotlib.use, or by deleting the reference to the backends module from > sys.modules in switch_backends before calling matplotlib.use. A > variation would be to use the force kwarg and to include the > switch_backends logic, or at least the reload line, in matplotlib.use. > That probably makes sense: add the force kwarg, and when the module is > replaced, reload it immediately within matplotlib.use. Then > pyplot.switch_backends only needs to do the pyplot-specific operations. > I think that is the cleanest solution.
I agree, this is a better way to go. (And occurred to me as well after the initial PR.) Glad I asked rather than doing my 2-line fix. The updated PR is at https://github.com/matplotlib/matplotlib/pull/1028 Ryan -- Ryan May Graduate Research Assistant School of Meteorology University of Oklahoma ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
