From 088fab8b78ca391781be2b6d65bcaf6f1894c4b0 Mon Sep 17 00:00:00 2001
From: frankknoll <Knoll_Frank@web.de>
Date: Sun, 2 Apr 2023 09:48:28 +0200
Subject: [PATCH] refactoring

---
 src/CountriesMerger.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/CountriesMerger.py b/src/CountriesMerger.py
index 3f703ced405..92bbf85f31b 100644
--- a/src/CountriesMerger.py
+++ b/src/CountriesMerger.py
@@ -6,8 +6,7 @@ class CountriesMerger:
     @staticmethod
     def mergeSrcIntoDst(src: pd.Series, dst: pd.Series):
         def merge(series):
-            series = series.dropna()
-            return sorted(set().union(*series))
+            return sorted(set().union(*series.dropna()))
         
         mergedSeries = (pd
                         .merge(dst, src, how='left', left_index=True, right_index=True)