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'
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.
from turtle import Turtle
n = 5
turtle_list = []
for i in range(n):
turtle_list.append(Turtle())
print(turtle_list[4]) # gives <turtle.Turtle object at 0x............>
Check out generating variable names on fly in python for more on this subject.
eval to exec). It is a valid answer. I just think any answer that includes one of those functions must have a disclaimer with it. Just like if someone asked "I am having trouble eating my steak with this chainsaw", giving chainsaw tips without noting that chainsaws are not normally used for eating steak is kind of irresponsible — you should really hint to the poor slob that they should consider a knife instead. :)You shouldn't 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)
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
