--- a/progs/catastrophic2.py	Mon Jul 27 01:55:05 2020 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,21 +0,0 @@
-#!/usr/bin/env python
-import re
-import sys
-
-# case of catastrophic backtracking in Python
-#
-# regex: (a*)*b
-# strings: aa...a
-#
-# call with timing as:
-#
-#   > time ./catastrophic.py 20
-
-# counter n given on the command line
-cn = sys.argv[1]
-
-# calling the matching function
-s = ("a" * int(cn))
-m = re.match('(a*)*b' , s) 
-
-print s