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diff --git a/challenge-252/luca-ferrari/python/ch-2.py b/challenge-252/luca-ferrari/python/ch-2.py
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+#!python
+
+#
+# Perl Weekly Challenge 252
+# Task 2
+#
+# See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-252/>
+#
+
+import sys
+
+# task implementation
+# the return value will be printed
+def main( argv ):
+    size = int( argv[ 0 ] )
+    nums = []
+
+    if size % 2 == 0:
+        for i in range( 1, size / 2 ):
+            nums.append( i )
+            nums.append( i * -1 )
+    else:
+        for i in range( 1, int( ( size - 1 ) / 2 ) ):
+            nums.append( i )
+            nums.append( i * -1 )
+
+        next = max( nums ) + 1
+        nums.append( next )
+        nums.append( next + 1 )
+        nums.append( ( next + next + 1 ) * -1 )
+
+    return nums
+
+
+
+# invoke the main without the command itself
+if __name__ == '__main__':
+    print( main( sys.argv[ 1: ] ) )
+