Safely import pyplot if a GUI framework is already running.#18316
Merged
QuLogic merged 1 commit intomatplotlib:masterfrom Aug 22, 2020
Merged
Safely import pyplot if a GUI framework is already running.#18316QuLogic merged 1 commit intomatplotlib:masterfrom
QuLogic merged 1 commit intomatplotlib:masterfrom
Conversation
`configure_subplots` now needs to import `pyplot` (because that's how we can spin up a new figure as needed), but when relying on embedding we could well reach that point with an already running interactive framework, pyplot never imported, and an incompatible rcParams["backend"] (which had not been read yet). For example, run `examples/user_interfaces/embedding_in_tk_sgskip.py` with a non-tk backend set in your matplotlibrc: clicking on the the configure_subplots button triggers a "cannot load backend 'foo' which requires the 'foo' interactive framework, as 'bar' is currently running". Instead, use a helper to safely import pyplot when another interactive framework may already be running. The list of frameworks that `_get_running_interactive_framework` returns is fixed, so we can just hardcode the mapping. (We are going to ignore the user-set `rcParams["backend"]` anyways.)
Member
|
Does this catch a case not covered by #18245 ? |
Contributor
Author
|
This is independent of #18245: here |
tacaswell
approved these changes
Aug 22, 2020
Member
|
feels a bit like epicycles, but still suspect that this is moving us in the direction of a simplification. |
QuLogic
approved these changes
Aug 22, 2020
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
configure_subplotsnow needs to importpyplot(because that'show we can spin up a new figure as needed), but when relying on
embedding we could well reach that point with an already running
interactive framework, pyplot never imported, and an incompatible
rcParams["backend"] (which had not been read yet). For example, run
examples/user_interfaces/embedding_in_tk_sgskip.pywith a non-tkbackend set in your matplotlibrc: clicking on the the configure_subplots
button triggers a "cannot load backend 'foo' which requires the 'foo'
interactive framework, as 'bar' is currently running".
Instead, use a helper to safely import pyplot when another interactive
framework may already be running. The list of frameworks that
_get_running_interactive_frameworkreturns is fixed, so we can justhardcode the mapping. (We are going to ignore the user-set
rcParams["backend"]anyways.)followup to #16818, especially #16818 (review) (which this does not fix, it's just the easy first step).
PR Summary
PR Checklist