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diff --git a/challenge-249/luca-ferrari/python/ch-2.py b/challenge-249/luca-ferrari/python/ch-2.py
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+#!python
+
+#
+# Perl Weekly Challenge 249
+# Task 2
+#
+# See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-249/>
+#
+
+import sys
+from itertools import permutations
+
+# task implementation
+def main( argv ):
+    nums = range( 0, len( argv[ 0 ] ) )
+
+
+    for perm in permutations( nums ):
+        ok = True
+        for i in range( 0, len( perm ) - 1 ):
+            if argv[ 0 ][ i ] == 'D' and perm[ i ] > perm[ i + 1 ]:
+                ok = False
+                break
+            elif argv[ 0 ][ i ] == 'I' and perm[ i ] < perm[ i + 1 ]:
+                ok = False
+                break
+
+        if ok:
+            print( ",".join( map( str, perm ) ) )
+            return
+
+
+# invoke the main without the command itself
+if __name__ == '__main__':
+    main( sys.argv[ 1: ] )
+
+