How to create multiple turtles in a for loop?-CodePudding

Let's say I want to create multiple turtles but also let the user decide how many there is. Is there a way to make a code like this? :

n = input()

for i in range(n):
   'turtle'   i = Turtle()

So you would end up with n turtles called 'turtle1', 'turtle2', ... 'turtle n'

CodePudding user response：

You wouldn't be able to assign them to unique variables that way, but you could always just store them in a list:

n = int(input())
turtles = []

for i in range(n):
   turtles.append(Turtle())

Then you could perform actions on specific turtles by calling on them by their index:

turtles[0].forward(100)
turtles[1].left(20)

CodePudding user response：

problems with the code

input() returns a string and range() does not take strings.
"turtle" i returns a string object which is immutable so you cant do something like "apple" = "banana"

solution

you can use a list to store the turtle objects in and you can use int() to cast the result from input() into a int.

import turtle
turtles = []
n = int(input())# convert input() into a int
for turtle in range(n):
    turtles.append(Turtle())# append a turtle to the list each iteration

you can access each turtle with its index like this

turtles[0]# first turtle
turtles[1]# second turtle

CodePudding user response：

Python comes with the possibility to execute commands given as strings if passed as argument to the exec() function. The following code does though what you asked for:

from turtle import Turtle
n = 5
for i in range(n):
   exec('turtle'   str(i)   ' = Turtle()')

print(turtle4) # gives <turtle.Turtle object at 0x............>

but it would be much better if you don't use it this way in your code and use a list for this purpose.

Check out generating variable names on fly in python for more on this subject.

CodePudding user response：

n = int(input("Enter the value for the turtles: "))

for i in range(n):
   print(f"turtle{i   1}")