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Backport PR #23912 on branch v3.6.x (FIX: only expect FigureCanvas on backend module if using new style) #23916

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Merged
merged 1 commit into from
Sep 23, 2022
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Backport PR #23912 on branch v3.6.x (FIX: only expect FigureCanvas on backend module if using new style) #23916

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3 changes: 2 additions & 1 deletion lib/matplotlib/pyplot.py
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Original file line number Diff line number Diff line change
Expand Up @@ -263,7 +263,6 @@ def switch_backend(newbackend):

backend_mod = importlib.import_module(
cbook._backend_module_name(newbackend))
canvas_class = backend_mod.FigureCanvas

required_framework = _get_required_interactive_framework(backend_mod)
if required_framework is not None:
Expand Down Expand Up @@ -293,6 +292,8 @@ class backend_mod(matplotlib.backend_bases._Backend):
# also update backend_mod accordingly; also, per-backend customization of
# draw_if_interactive is disabled.
if new_figure_manager is None:
# only try to get the canvas class if have opted into the new scheme
canvas_class = backend_mod.FigureCanvas
def new_figure_manager_given_figure(num, figure):
return canvas_class.new_manager(figure, num)

Expand Down