turtle showing error which used to work fine earlier - python

import turtle
t = turtle.Turtle()
t.forward(100)
t.done()
this code is returning an error like this
NameError: name 'turtle' is not defined
I have tried to use turtle but it doesn't seem to be working the way it is shown in the code.
I have tried referring to various sources but could not find the fix

The problem lies on this line:
t.done()
You see, you defined t as a Turtle object, and Turtle objects have no attribute done.
The done() attribute belongs to the turtle module itself, so instead of t.done(), it's turtle.done():
import turtle
t = turtle.Turtle()
t.forward(100)
turtle.done()

Related

Why does the screen with turtle graphic close down by itself

Why does the screen with turtle graphic close down by itself?
import turtle
circle = turtle.Turtle()
circle.color("pink")
circle.pensize(5)
circle.speed(5)
circle.circle(10)
circle.done()
Instead of circle.done(), put turtle.done()
The turtle window closed by itself because your program ran into an error:
AttributeError: 'Turtle' object has no attribute 'done'
Use turtle.done() instead:
import turtle
circle = turtle.Turtle()
circle.color("pink")
circle.pensize(5)
circle.speed(5)
circle.circle(10)
turtle.done()
See the documentation here.

t=turtle.Pen() says turtle doesn't have the attribute Pen

After importing turtle, I keep trying to put t=turtle.Pen() but it says turtle doesn't have the attribute Pen.
I have tried
turtle=turtle.Pen()
t=turtle.Turtle()
myturtle=turtle.Pen()
my turtle =turtle.Turtle()
but every time it says turtle does not have attribute whatever I put as my attribute. Does anyone know why this is happening? I have python version 3.5.0
Here is a brief turtle example:
https://gist.github.com/wolfospealain/af3410a9e71eb2ff7be5625174c4f4c5
#!/usr/bin/python3.5
import turtle
turtle.shape("turtle")
turtle.left(45)
turtle.forward(50)
turtle.right(65)
turtle.circle(150,350)
turtle.home()
big=("Arial", 36, "normal")
turtle.penup()
turtle.goto(-40,150)
turtle.write("Hello World!", font=big)
turtle.home()
turtle.back(20)
turtle.exitonclick()
Notice how you must first import turtle to make the turtle library available to your program.
Notice, too, that all the method names are lower case (for example, turtle.penup()).
I think you probably meant turtle.penup(), which allows you to "move" without drawing.
You can find complete turtle documentation here: https://docs.python.org/3.3/library/turtle.html
Here is a short tutorial you might find helpful: https://www.tutorialspoint.com/turtle-programming-in-python

Invalid syntax for turtle name (python)

I am trying to write a program to draw a flower, but no matter what I do it keeps throwing an "invalid syntax" error for the turtle name. I have taken out all of my other code, tried naming the turtle something different, yet nothing works. Any ideas?
import turtle
def draw_flower():
window = turtle.Screen()
window.bgcolor(#42dff4)
sam = turtle.Turtle()
sam.forward(50)
window.exitonclick()
draw_flower()
Besides quoting the color string, as noted in the comments, your lines of code are in the wrong order. For example, generally nothing should follow window.exitonclick():
window.exitonclick()
draw_flower()
Make it (or window.mainloop()) the last statement of your program as that's when your code ends and the Tk event handler loop begins. I.e. reverse the order of these two statements. The second problem is that the variable window is in the wrong scope:
def draw_flower():
window = turtle.Screen()
...
window.exitonclick()
Since it's defined locally in draw_flower(), it's not available to use globally. Here's a rework of your code addressing both issues:
import turtle
def draw_flower():
sam = turtle.Turtle()
sam.forward(50)
window = turtle.Screen()
window.bgcolor("#42dff4")
draw_flower()
window.exitonclick()

mainloop function from turtle class is not working, Python

This is my code :
import turtle
wn = turtle.Screen()
alex = turtle.Turtle()
alex.forward(50)
alex.left(90)
alex.forward(30)
wn.mainloop()
And my error is: "_Screen object has no attribute mainloop"
I tried to do just "mainloop" but then I got NameError while doing alex.mainloop gave same error i.e. turtle object has no attribute mainloop.
Googling told me that I might have my file name as turtle.py creating the conflict but that's not the case.
You just need to call the mainloop() function on the turtle module. So your last line should be:
turtle.mainloop()

How to stop turtle from drawing even with pen up?

I am using the turtle module in python. the problem is that whenever I have the turtle move i will draw even if the pen is up. for example if I run this program:
import turtle
turtle.penup
turtle.goto(0,50)
the turtle will still draw a line when it moves to (0,50)
why is this and how can it be prevented?
It looks like you're not actually calling turtle.penup. Try this:
import turtle
turtle.penup()
turtle.goto(0,50)
You have a typo, you aren't calling the penup method:
import turtle
turtle.penup() #This needs to be a method call
turtle.goto(0,50)
import turtle
turtle.up()
turtle.goto(0,50)
turtle.down()
if you don't put the pen down it will keep on drawing in invisible condition.
This question is super old and definitely has already been answered, but I'll leave this explanation here for future people
"penup" is a method in Python, aka function in other languages. This means that when you want to use it you have it include some parenthesis just so that your code knows what is supposed to be happening
import turtle
turtle.penup()
turtle.goto(0,50)
When you don't include the parenthesis, the code thinks you are talking about a variable, and looks for one called "penup", but there is no variable of that name, so Python throws its hands up and crashes
you called penup without (). with
turtle.penup()
this will work.
Others here said that, but implicitly. trying to ensure it is clear where the typo is.
You should probably try,
turtle.penup()
no it should be something like this:
turtle.up() # This a method call
turtle.goto(0,50) # Part of the method call

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