Interpreting output from other programs

In decay_exper0.py we run a program (os.system) and want to grab the output, e.g.,

Terminal> python decay_plot_mpl.py
0.0   0.40:    2.105E-01
0.0   0.04:    1.449E-02
0.5   0.40:    3.362E-02
0.5   0.04:    1.887E-04
1.0   0.40:    1.030E-01
1.0   0.04:    1.382E-02

Tasks:

• read the output from the decay_mod.py program
• interpret this output and store the \( E \) values in arrays for each \( \theta \) value
• plot \( E \) versus \( \Delta t \), for each \( \theta \), in a log-log plot