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diy1.py

-"""
-使用turtle模块画图
-每次移动都增加画笔移动的长度，并旋转91°，重复执行300次，查看效果
-"""
-import turtle
-pen= turtle.Pen()
-screen=turtle.Screen()
-screen.bgcolor("black")
-color=["red","orange","yellow","green"]
-for i in range(1,300):
-    pen.pencolor(color[i%4])
-    pen.forward(i)
-    pen.right(91)
-    #i+=1
-pen.hideturtle()
-turtle.done()
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+for i in range(4):
+    #print end=
+    for j in range(2*i-1):
+        print("*",end="")
+    print()
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