save project

sifang2.py

+import turtle
+i=int(turtle.textinput("fengche","层数"))
+turtle.bgcolor("black")
+turtle.speed(10)
+color=["red","blue","green","pink"]
+for a in range(1,i):
+    turtle.color(color[a%4])
+    turtle.forward(a)
+    turtle.right(91)
+turtle.hideturtle()
+turtle.done()
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