Task

Display a series of vertical color bars across the width of the display.

The color bars should either use:

   the system palette,   or 
   the sequence of colors: 
   black
   red
   green
   blue
   magenta
   cyan
   yellow
   white


 
#!/usr/bin/env python
#vertical coloured stripes in window in Python 2.7.1
 
from livewires import *
 
horiz=640; vert=480
begin_graphics(width=horiz,height=vert,title="v_stripes",background=Colour.black)
NameColors=["black","red","green","dark_blue","purple","blue","yellow","white"]
stepik=horiz/len(NameColors)
 
for index,each in enumerate(NameColors):
	ExcStrng="set_colour(Colour."+each+")"
	exec ExcStrng
	box(index*stepik,0,(index+1)*stepik,vert,filled=1)
 
while keys_pressed() != ['x']: # press x key to terminate program
	pass
 
end_graphics()
 