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Fix check for manager = None. #17720

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Merged
merged 1 commit into from
Jun 22, 2020
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anntzer
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@anntzer anntzer commented Jun 22, 2020

The previous check was for hasattr(canvas, "manager") but canvases now
always have the attribute present. Missed this in 3ccc17b.

Closes #17716.

PR Summary

PR Checklist

  • Has Pytest style unit tests
  • Code is Flake 8 compliant
  • New features are documented, with examples if plot related
  • Documentation is sphinx and numpydoc compliant
  • Added an entry to doc/users/next_whats_new/ if major new feature (follow instructions in README.rst there)
  • Documented in doc/api/api_changes.rst if API changed in a backward-incompatible way

The previous check was for `hasattr(canvas, "manager")` but canvases now
always have the attribute present.  Missed this in 3ccc17b.
@anntzer anntzer added this to the v3.3.0 milestone Jun 22, 2020
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Anybody can merge after CI pass.

@QuLogic QuLogic merged commit 7d6f355 into matplotlib:master Jun 22, 2020
meeseeksmachine pushed a commit to meeseeksmachine/matplotlib that referenced this pull request Jun 22, 2020
@anntzer anntzer deleted the managernone branch June 22, 2020 19:52
QuLogic added a commit that referenced this pull request Jun 22, 2020
…720-on-v3.3.x

Backport PR #17720 on branch v3.3.x (Fix check for manager = None.)
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Error using "set_window_title" for canvas via backend_qt5agg
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