save project

diy1.py

 import turtle
 import turtle
 bi=turtle.Pen()
 bi=turtle.Pen()
+colors=["red","blue","yellow","green"]
 for i in range(300):
 for i in range(300):
+    bi.color(colors[i%4])
     bi.forward(i)
     bi.forward(i)
     bi.left(91)
     bi.left(91)
     i+=1
     i+=1