From c8981ee96890287f59fcc2081c9f942c4e835fd3 Mon Sep 17 00:00:00 2001
From: Blaise Li <blaise.li__git@nsup.org>
Date: Wed, 8 Nov 2023 11:28:02 +0100
Subject: [PATCH] Fixing groupby axis.

---
 libcodonusage/__init__.py      | 2 +-
 libcodonusage/libcodonusage.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libcodonusage/__init__.py b/libcodonusage/__init__.py
index 8621fcf..81a2d1f 100644
--- a/libcodonusage/__init__.py
+++ b/libcodonusage/__init__.py
@@ -1,6 +1,6 @@
 __copyright__ = "Copyright (C) 2022-2023 Blaise Li, Marie Anselmet"
 __licence__ = "GNU GPLv3"
-__version__ = "0.28.3"
+__version__ = "0.28.4"
 from .libcodonusage import (
     aa2colour,
     aa_usage,
diff --git a/libcodonusage/libcodonusage.py b/libcodonusage/libcodonusage.py
index 95ff318..a1d4894 100644
--- a/libcodonusage/libcodonusage.py
+++ b/libcodonusage/libcodonusage.py
@@ -552,7 +552,7 @@ def group_codons_by_class(
     # getattr accesses the method whose name is in argument *mode*
     # and this method is called to get the result of the groupby operation.
     codon_counts_grouped = getattr(
-        codon_counts_pre_group.groupby(level=["aa", "codon"]),
+        codon_counts_pre_group.groupby(level=["aa", "codon"], axis=1),
         mode)()
     if keep_only_groups:
         return codon_counts_grouped
-- 
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