Follow up PR: #28097 Simplify branch statement (#29243)

pandas-dev · Jan 26, 2020 · 8e1dd1e · 8e1dd1e
1 parent d12c2c6
commit 8e1dd1e
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
@@ -1261,10 +1261,10 @@ def _get_grouper_for_level(self, mapper, level):
             # on the output of a groupby doesn't reflect back here.
             level_index = level_index.copy()
 
-        if len(level_index):
-            grouper = level_index.take(codes)
-        else:
+        if level_index._can_hold_na:
             grouper = level_index.take(codes, fill_value=True)
+        else:
+            grouper = level_index.take(codes)
 
         return grouper, codes, level_index