1 files changed, 6 insertions, 6 deletions
diff --git a/challenge-123/abigail/python/ch-2.py b/challenge-123/abigail/python/ch-2.py
index e61a2cc0c5..437dc072ff 100644
--- a/challenge-123/abigail/python/ch-2.py
+++ b/challenge-123/abigail/python/ch-2.py
@@ -10,15 +10,15 @@
 
 import fileinput
 
+def dist (x1, y1, x2, y2):
+    return (x1 - x2) ** 2 + (y1 - y2) ** 2
+
 for line in fileinput . input ():
     [x1, y1, x2, y2, x3, y3, x4, y4] = \
          map (lambda x: int (x), line . split (' '))
-    if (x1 - x2) ** 2 + (y1 - y2) ** 2 ==   \
-       (x2 - x3) ** 2 + (y2 - y3) ** 2 ==   \
-       (x3 - x4) ** 2 + (y3 - y4) ** 2 ==   \
-       (x4 - x1) ** 2 + (y4 - y1) ** 2 and  \
-       (x1 - x3) ** 2 + (y1 - y3) ** 2 ==   \
-       (x2 - x4) ** 2 + (y2 - y4) ** 2:
+    if dist (x1, y1, x2, y2) == dist (x2, y2, x3, y3) ==  \
+       dist (x3, y3, x4, y4) == dist (x4, y4, x1, y1) and \
+       dist (x1, y1, x3, y3) == dist (x2, y2, x4, y4):
         print (1)
     else:
         print (0)