"Marco Rompré" <marcodrom...@gmail.com> wrote
turtle was drawing a yellow square then it was drawing a
triangle on the sqare but with no lines whatsovever
You'll need to put the pen down() again for it to draw
the lines...
like it was just going over it and the last problem was
that it was never stopping
Thats because you increment n outside the while loop
so it never stops looping.
I hope I am more precis with my explanations.
Much better, thanks.
n=0
while n < 10 :
down() # abaisser le crayon
carre(25, 'yellow', 0) # tracer un carré
up()
forward(30)
triangle(90, 'blue',0) # THE PEN IS STILL UP HERE
n = n + 1 # THIS IS OUTSIDE THE WHILE BLOCK
I notice this pattern in your functions too. You are using a
while loop to repeat a fixed number of times. A for loop
is the normal way to do that and is guaranteed to stop...:
For example your square function has:
c=0
while c<4:
left(angle)
forward(taille)
right(90)
c = c+1
which can be written:
for c in range(4):
left(angle)
forward(taille)
right(90)
But notice the left and right kind of cancel out so
you usually won't get a square... I suspect you
meant to have:
left(angle)
for c in range(4):
forward(taille)
right(90)
Similarly for the triangle I think you want:
left(angle)
for c in range(3):
forward(taille)
right(120)
When working with the turtle its a good idea to test your
functions at the interactive prompt (>>>). Put the functions
in a file and import the file then you can call them directly
and see whether they draw what you expect.
HTH,
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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