Below is the syntax highlighted version of chargeclient.py
from §3.1 Using Data Types.
#----------------------------------------------------------------------- # chargeclient.py #----------------------------------------------------------------------- import sys import stdio from charge import Charge # Accept floats x and y as command-line arguments. Create two Charge # objects with fixed position and electrical charge, and write to # standard output the potential at (x, y) due to the two charges. x = float(sys.argv[1]) y = float(sys.argv[2]) c1 = Charge(.51, .63, 21.3) c2 = Charge(.13, .94, 81.9) v1 = c1.potentialAt(x, y) v2 = c2.potentialAt(x, y) stdio.writef('potential at (%.2f, %.2f) due to\n', x, y) stdio.writeln(' ' + str(c1) + ' and') stdio.writeln(' ' + str(c2)) stdio.writef('is %.2e\n', v1+v2) #----------------------------------------------------------------------- # python chargeclient.py .2 .5 # potential at (0.20, 0.50) due to # 21.3 at (0.51, 0.63) and # 81.9 at (0.13, 0.94) # is 2.22e+12 # python chargeclient.py .51 .94 # potential at (0.51, 0.94) due to # 21.3 at (0.51, 0.63) and # 81.9 at (0.13, 0.94) # is 2.56e+12