diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
index 0c7893b81977..605212c75bfb 100644
--- a/lib/matplotlib/backend_bases.py
+++ b/lib/matplotlib/backend_bases.py
@@ -3523,6 +3523,9 @@ class Show(ShowBase):
def mainloop(self):
return cls.mainloop()
+ if not hasattr(sys.modules[cls.__module__], "Backend"):
+ setattr(sys.modules[cls.__module__], "Backend", cls)
+
setattr(sys.modules[cls.__module__], "Show", Show)
return cls
diff --git a/lib/matplotlib/pyplot.py b/lib/matplotlib/pyplot.py
index 45e40feeef54..67e27a9c85ff 100644
--- a/lib/matplotlib/pyplot.py
+++ b/lib/matplotlib/pyplot.py
@@ -269,8 +269,16 @@ def switch_backend(newbackend):
backend_name = cbook._backend_module_name(newbackend)
- class backend_mod(matplotlib.backend_bases._Backend):
- locals().update(vars(importlib.import_module(backend_name)))
+ backend_mod = importlib.import_module(backend_name)
+ if hasattr(backend_mod, "Backend"):
+ backend_mod = backend_mod.Backend
+ else:
+ class backend_mod(matplotlib.backend_bases._Backend):
+ locals().update(vars(backend_mod))
+
+ @classmethod
+ def mainloop(cls):
+ return backend_mod.Show().mainloop()
required_framework = _get_required_interactive_framework(backend_mod)
if required_framework is not None:
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