Fix the Quantity test fixture

vladistan · vladistan · commit 114691ac1f76 · 2021-11-01T15:54:09.000-04:00
diff --git a/lib/matplotlib/tests/test_units.py b/lib/matplotlib/tests/test_units.py
@@ -26,6 +26,9 @@ def to(self, new_units):
         else:
             return Quantity(self.magnitude, self.units)
 
+    def __copy__(self):
+        return Quantity(self.magnitude, self.units)
+
     def __getattr__(self, attr):
         return getattr(self.magnitude, attr)
 
