auto save

diy1.py

 import turtle
 pen=turtle.Pen()
-i=1
 pen.speed(0)
+screen=turtle.Screen()
+screen.bgcolor("black")
+color=["red","yellow","bule","green"]
 for i in range(1,1000):
+    pen.pencolor(color[i%4])
+
     pen.forward(i)
     pen.right(91)
-    i+=1
 pen.hideturtle()
 turtle.done()
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乘法口诀表.py

+for i in range(1,10):
+for i in range(1,10):
+    for j in range(1,i+1):
+        print(j,'x',i,'=',(j*i),end="  ")
+    print()
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