Re: [Tutor] creating Turtle() object using 2 different ways

[spir]

On 01/31/2014 10:38 PM, Alan Gauld wrote:

If you want multiple turtles you should use
the first version.


Yes, the turtle module has a global turtle that can be used by people playing 
with a single turtle, and prefere conventional procedural programming style, 
rather than object-oriented (OO). If you need multiple turtle or prefere OO, 
then you need to first create an OO turtle as you did, using turtle.Turtle().

(It's all explained in the docs: http://docs.python.org/3/library/turtle.html :
<< The turtle module provides turtle graphics primitives, in both 
object-oriented and procedure-oriented ways. >> )


d



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Re: [Tutor] creating Turtle() object using 2 different ways

[Alan Gauld]

On 31/01/14 10:09, Ian D wrote:

Hi

Another quickie.

I can create turtle objects (if that's the correct terminology) using 2
different ways, both work.

t1 = turtle.Turtle()
  or
t2 = turtle

But which is the best practice... and why?




import turtle

t1 = turtle.Turtle()


This creates an instance of a turtle


t2 = turtle


This is just a reference to the turtle module


t1.fd(100)


This moves your specified instance of a turtle


t2.goto(-100,100)
t2.fd(100)


These move the global turtle object using the
module level functions.

If you want multiple turtles you should use
the first version.


--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.flickr.com/photos/alangauldphotos

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[Tutor] creating Turtle() object using 2 different ways

[Ian D]

Hi
 
Another quickie.
 
I can create turtle objects (if that's the correct terminology) using 2 
different ways, both work.
 
t1 = turtle.Turtle()
 or
t2 = turtle
 
But which is the best practice... and why?
 
 
 
 
import turtle
 
t1 = turtle.Turtle()
 
t2 = turtle
 
t1.fd(100)
 
t2.goto(-100,100)
t2.fd(100)
 
 
 
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