save project

diy1.py

+import turtle
+screen = turtle.screen()
+screen.bgcolor('pinck') 
+pen1 = turtle.Pen()
+pen1.penup()
+pen1.goto(100,-100)
+pen1.write('sin=0.5\n三角形面积是多少',font=('times',10,'normal'))
+pen1.hideturtle()
+
+pen = turtle.Pen()
+pen.fillcolor('red')
+pen.begin_fill()
+pen.pencolor('red')
+pen.pensize(5)
+pen.left(45)
+pen.forward(100)
+pen.circle(50,180)
+pen.right(90)
+pen.circle(50,180)
+pen.forward(100)
+pen.end_fill()
+pen.hideturtle()
+turtle.done()