log ch5ex7.py @ 48:98eb01502cf5 tip

age author description
Thu, 10 Jan 2013 20:24:56 -0600 Brian Neal Comment out the calculation of L as it may take a long time.
Thu, 10 Jan 2013 20:23:52 -0600 Brian Neal Chapter 5.6, exercise 7. Exploring the Texas road network.