Python Turtle Screen not showing up

Question

Does anyone know why the screen isn't popping up? I put the myScreen function above it pops but it isn't working. Is this a problem with my ide?

import turtle



color = input("What color: ")
linewidth = int(input("What linewidth: "))  
linelength = int(input("What linelength: "))  
shape = input("line, triangle, or square: ")
myTurtle = turtle.Turtle()
myScreen = turtle.Screen()

if shape == "line":
    myTurtle.color(color)
    myTurtle.width(linewidth)
    myTurtle.forward(linelength)
elif shape == "triangle":
    myTurtle.color(color)
    myTurtle.width(linewidth)
    for _ in range(3):
        myTurtle.forward(linelength)
        myTurtle.left(120)
elif shape == "square":
    myTurtle.color(color)
    myTurtle.width(linewidth)
    for _ in range(4):
        myTurtle.forward(linelength)
        myTurtle.left(90)
else:
    print("Shape not recognized.")

Answer 1

After looking at your code, it turns out that you have not used turtle.done() in your code. This is the fixed code:

import turtle

color = input("What color: ")
linewidth = int(input("What linewidth: "))  
linelength = int(input("What linelength: "))  
shape = input("line, triangle, or square: ")
myTurtle = turtle.Turtle()
myScreen = turtle.Screen()

if shape == "line":
    myTurtle.color(color)
    myTurtle.width(linewidth)
    myTurtle.forward(linelength)
elif shape == "triangle":
    myTurtle.color(color)
    myTurtle.width(linewidth)
    for _ in range(3):
        myTurtle.forward(linelength)
        myTurtle.left(120)
elif shape == "square":
    myTurtle.color(color)
    myTurtle.width(linewidth)
    for _ in range(4):
        myTurtle.forward(linelength)
        myTurtle.left(90)
else:
    print("Shape not recognized.")

turtle.done()

This alternative is better than the one suggested in the comments of the post: turtle.exitonclick(), while it does the job, it also closes the program on a click. turtle.done() is a alias for turtle.mainloop().