More robustness when dealing with pandas column multi-index.

yohplala · Aug 21, 2024 · 02228b1 · 02228b1
1 parent 3e841fb
commit 02228b1
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/oups/store/writer.py b/oups/store/writer.py
@@ -229,13 +229,14 @@ def check_cmidx(chunk):
 
     Most notably, fastparquet requires names for each level in a Multiindex.
     If these are not set, there are set to '', an empty string.
+    Also, column names have to be tuple of string.
 
-    Multiindex is modified in-place.
+    DataFrame is modified in-place.
 
     Parameters
     ----------
     chunk : DataFrame
-        DataFrame which multi-index is to check.
+        DataFrame with a column multi-index to check and possibly adjust.
 
     Returns
     -------