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venv/lib/python3.9/site-packages/matplotlib/backends/backend_tkagg.py

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+from . import _backend_tk
+from .backend_agg import FigureCanvasAgg
+from ._backend_tk import _BackendTk, FigureCanvasTk
+from ._backend_tk import (  # noqa: F401 # pylint: disable=W0611
+    FigureManagerTk, NavigationToolbar2Tk)
+
+
+class FigureCanvasTkAgg(FigureCanvasAgg, FigureCanvasTk):
+    def draw(self):
+        super().draw()
+        self.blit()
+
+    def blit(self, bbox=None):
+        _backend_tk.blit(self._tkphoto, self.renderer.buffer_rgba(),
+                         (0, 1, 2, 3), bbox=bbox)
+
+
+@_BackendTk.export
+class _BackendTkAgg(_BackendTk):
+    FigureCanvas = FigureCanvasTkAgg