# This program reads from a file called cities.txt which contains the (x, y)
# coordinates of US cities with a popluation of 500 or more.  It draws a
# 1x1 rectangle (a single pixel) for each city.

from drawingpanel import *

panel = DrawingPanel(500, 300)

for line in file("cities.txt"):
    parts = line.split()
    x = int(round(float(parts[0])))
    y = int(round(float(parts[1])))
    panel.canvas.create_rectangle(x, y, x, y)

panel.mainloop()