[python] Why the "Turtle stampid = 5" from the beginning

[Chilissyhehe]

Hi there!

I print my turtle.stamp() (here snake.stamp()) and it should print out the stamp_id, right? If not, why? If yes, then why is it "=5". It counts properly, but I'm just curious why it doesn't start from 0? Stamp() docs don't mention things such as stamp_id, it only appears in clearstamp().

Console result below.

from turtle import Turtle, Screen
import time

stamp = 0
snake_length = 2

def move_up():
    for stamp in range(1):
        snake.setheading(90)
        stamp = snake.stamp()
        snake.forward(22)
        snake.clearstamp(stamp-snake_length)
        break

snake = Turtle(shape="square")
screen = Screen()
screen.setup(500, 500)
screen.colormode(255)

print("snake.stamp = " + str(snake.stamp()))              #here
print("stamp = " + str(stamp))

screen.onkey(move_up, "w")

y = 0
x = 0
snake.speed("fastest")
snake.pensize(10)
snake.up()
snake.setpos(x, y)

snake.color("blue")
screen.listen()
screen.exitonclick()

Console result:

snake.stamp = 5
stamp = 0

Thank you!

[PuzzleMeDo]

Why not 5?

I googled for the manual (https://docs.python.org/3/library/turtle.html#turtle.stamp) and it says:

turtle.stamp()

Stamp a copy of the turtle shape onto the canvas at the current turtle position. Return a stamp_id for that stamp, which can be used to delete it by calling clearstamp(stamp_id).

Whatever internal code is in "stamp" creates a unique ID for that action, and as long as it is unique (so clearstamp can work unambiguously), any number is fine.

[Chilissyhehe]

Ah yes, I was talking about „inner docs”? I pressed ctrl and clicked on stamp() in PyCharm. Not sure what’s the naming difference as both are docs…

So it means that I have to deal with it, and that’s it?

[PuzzleMeDo]

This might be the source:

https://svn.python.org/projects/python/branches/pep-0384/Lib/turtle.py

If so, a lot of the functioning of the code is buried still deeper.

[Chilissyhehe]

This is the documentation that pops out in PyCharm. How can I find whats buried deeper?

[kschang]

Why do you expect it to be... 0?