Simplify argument checking in Table.__getitem__. (#12932)

anntzer · timhoffm · commit a6d689c1a370 · 2018-12-05T23:58:25.000+01:00
This just lets the exception, if any, propagate out of
`dict.__getitem__`; this avoids e.g. `Table[a, b, c]` silently "working"
by silently dropping the third argument.
diff --git a/lib/matplotlib/table.py b/lib/matplotlib/table.py
@@ -349,14 +349,8 @@ def __setitem__(self, position, cell):
         self.stale = True
 
     def __getitem__(self, position):
-        """
-        Retrieve a custom cell from a given position.
-        """
-        try:
-            row, col = position[0], position[1]
-        except Exception:
-            raise KeyError('Only tuples length 2 are accepted as coordinates')
-        return self._cells[row, col]
+        """Retrieve a custom cell from a given position."""
+        return self._cells[position]
 
     @property
     def edges(self):
