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1 change: 1 addition & 0 deletions lib/matplotlib/axes/_axes.py
Original file line number Diff line number Diff line change
Expand Up @@ -2672,6 +2672,7 @@ def pie(self, x, explode=None, labels=None, colors=None,
The pie chart will probably look best if the figure and axes are
square, or the Axes aspect is equal.
"""
self.set_aspect('equal')
x = np.array(x, np.float32)

sx = x.sum()
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