Consistent sorting of missing keys

mwaskom · Sep 20, 2021 · 7417eb7 · 7417eb7
1 parent a179cdc
commit 7417eb7
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/seaborn/_core/mappings.py b/seaborn/_core/mappings.py
@@ -94,7 +94,7 @@ def setup(
         elif isinstance(provided, dict):
             missing = set(data) - set(provided)
             if missing:
-                formatted = ", ".join(map(repr, missing))
+                formatted = ", ".join(map(repr, sorted(missing, key=str)))
                 err = f"Missing {self._semantic} for following value(s): {formatted}"
                 raise ValueError(err)
             dictionary = provided

diff --git a/seaborn/tests/_core/test_mappings.py b/seaborn/tests/_core/test_mappings.py
@@ -17,6 +17,7 @@
     DashMapping,
     MarkerMapping,
 )
+from seaborn.palettes import color_palette
 
 
 class TestGroupMapping: