PYTHON PROJECT: Draw shape and chose your color

import turtle
a = input("shape:")
b = input("color:")

ok = turtle.Turtle()
ok.shape("turtle")
ok.pensize(10)
ok.speed(5)

if b == "black":
ok.pencolor("black")

elif b == "blue":
ok.pencolor("blue")

elif b == "green":
ok.pencolor("green")
elif b == "red":
ok.pencolor("red")

elif b == "yellow":
ok.pencolor("yellow")

elif b == "pink":
ok.pencolor("pink")

elif b == "purple":
ok.pencolor("purple")

elif b == "orange":
ok.pencolor("orange")

elif b == "brown":
ok.pencolor("brown")

elif b == "dark blue":
ok.pencolor("darkblue")

elif b == "lightblue":
ok.pencolor("lightblue")

elif b == "lightyellow":
ok.pencolor("lightyellow")

elif b == "grey":
ok.pencolor("grey")

if a == "circle":
ok.penup()
ok.goto(-50, 0)
ok.pendown()
ok.circle(100)
ok.penup
ok.penup()
ok.goto(-50, 70)
ok.pencolor("black")
ok.pendown()
ok.circle(20)

elif a == "square":
for i in range(4):
ok.forward(100)
ok.left(90)

elif a == "triangle":
ok.right(60)
ok.forward(150)
ok.right(120)
ok.forward(160)
ok.right(120)
ok.forward(160)

elif a == "rectangle":
for i in range (2):
ok.forward(60)
ok.left(90)
ok.forward(130)
ok.left(90)

elif a == "Octagon":
for i in range (8):
ok.forward(100)
ok.left(45)

elif a == "graphic":
for i in range(1,20):
ok.pensize(5)
ok.forward(100)
ok.left(95)

elif a == "pentagon":
for i in range (5):
ok.forward(90)
ok.left(70)

elif a == "star":
for i in range (5):
ok.forward(200)
ok.right(144)

ok.screen.mainloop()

I love This project :)

Looks good

I love ıt