save project

diy1.py

+# 通过改变变量来改变半径
+import turtle
+pen1 = turtle.Pen()
+pen1.pensize(5)#画笔尺寸 
+pen1.pencolor("red")#画笔颜色
+len = 50
+pen1.left(45)
+pen1.forward(2*len)#len是半径
+pen1.circle(2*len,180)
+pen1.right(90)
+pen1.circle(2*len,180)
+pen1.forward(2*len)
+turtle.down()
+pen = turtle.Pen()
+pen.penup()
+goto(20,-20)
+pen.write("Hello\nNoy.",font("Times",20,"normal"))
+#pen.write 书写方法
+#\n 换行符
+#font 内部数据
+