save project

123.py

+import turtle
+pen=turtle.Pen()
+distance=1
+screen=turtle.Screen()
+screen.bgcolor("black")
+color=["pink","blue","green","red"]
+for i in range(2,300,3):
+    pen.pencolor(color[i%4])
+    pen.forward(distance)
+    pen.right(91)
+    distance+=1
+pen.hideturtle()
+turtle.done()