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diff --git a/challenge-275/luca-ferrari/python/ch-2.py b/challenge-275/luca-ferrari/python/ch-2.py
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+#!python
+
+#
+# Perl Weekly Challenge 275
+# Task 2
+#
+# See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-275>
+#
+
+import sys
+
+# task implementation
+# the return value will be printed
+def task_2( args ):
+    string = args[ 0 ]
+    previous = None
+    result   = ""
+
+    for c in string:
+        if c.isdigit():
+            c = chr( int( c ) + 97 )
+        else:
+            previous = c
+
+        result += c
+
+    return result
+
+
+# invoke the main without the command itself
+if __name__ == '__main__':
+    print( task_2( sys.argv[ 1: ] ) )