Don't set the never-used Line2D._contains in set_picker. (matplotlib#24761)

anntzer · Marvvxi · commit f82b64fc7036 · 2022-12-20T19:19:06.000+01:00
The _contains attribute is never accessed anywhere in the library (since
the removal of get/set_contains).  Note that this patch intentionally
doesn't try to disentangle the much more complex interplay between
set_picker and set_pickradius...
diff --git a/lib/matplotlib/lines.py b/lib/matplotlib/lines.py
@@ -611,9 +611,7 @@ def set_picker(self, p):
         p : float or callable[[Artist, Event], tuple[bool, dict]]
             If a float, it is used as the pick radius in points.
         """
-        if callable(p):
-            self._contains = p
-        else:
+        if not callable(p):
             self.set_pickradius(p)
         self._picker = p
 
