Python Turtle: How to do onkeypress to a function in another file

Python Turtle: How to do onkeypress to a function in another file

Problem Description:

I have this issue in python turtle that when I attempt to do the onkeypress feature for a function that is in another file, nothing occurs. No error messages, no character movement. Nothing.

File 1 (Player Function and Creating Sprite):

class Player:
    global player
    import turtle
    player = turtle.Turtle()
    player.shapesize(2, 2)
def moved(x, y):

File 2 (imports the function and when key pressed activates function):

import turtle

from Player import Player
from Player import moved

sc = turtle.Screen()

sc.onkeypress(moved, "u")


I tried to use the normal feature to do this, but it just didn’t work. Someone please tell me how to fix it.

Solution – 1

Just move the function in the other script or write in in only one script. Do you even need more scripts. Otherwise you didnt provide x and y for the function. To make the code nice you can also do from Player import * instead of two imports.

Solution – 2

You’re missing a call to sc.listen(), which is required to enable key listeners.

Next, the callback to onkeypress should accept 0 parameters, not 2. The x and y parameters are used for clicks. What x and y values would be relevant to a key press?

Furthermore, you don’t need the global keyword here and imports should occur at the top of files. If moved (should be named move, a verb) is associated with the Player, then it should be in the class. We might as well make it an instance-based class rather than a simple namespace. The convention is that files/modules are lowercase in Python.

Here’s a re-write suggestion:

import turtle

class Player:
    def __init__(self): 
        self.turtle = t = turtle.Turtle()
        t.shapesize(2, 2)

    def move(self):

import turtle
from player import Player

sc = turtle.Screen()
player = Player()

sc.onkeypress(player.move, "u")

Rate this post
We use cookies in order to give you the best possible experience on our website. By continuing to use this site, you agree to our use of cookies.