--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ch6ex1.py	Fri Jan 11 21:18:45 2013 -0600
@@ -0,0 +1,26 @@
+"""Chapter 6, exercise 1 in Allen Downey's Think Complexity book.
+
+"Download thinkcomplex.com/CA.py and thinkcomplex.com/CADrawer.py and confirm
+that they run on your system; you might have to install additional Python
+packages."
+
+"""
+import sys
+
+import CA
+from CADrawer import PyplotDrawer
+
+def main(script, rule, n):
+    rule = int(rule)
+    n = int(n)
+    ca = CA.CA(rule, n)
+    ca.start_single()
+    ca.loop(n - 1)
+
+    drawer = PyplotDrawer()
+    drawer.draw(ca)
+    drawer.show()
+
+
+if __name__ == '__main__':
+    main(*sys.argv)