save project

my_tree.py

+import turtle
+
+pen = turtle.Turtle()
+pen.color('sienna')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('wheat')      # wheat小麦
+
+# 移动到起点
+pen.left(90)
+pen.up()
+pen.backward(150)    # 后退
+pen.down()
+
+pen.forward(100)  #主树干
+pen.right(30)     #右树干
+pen.forward(50)
+pen.penup()
+pen.forward(-50)
+pen.pendown()
+pen.left(60)      #左树干
+pen.forward(50)
+pen.penup()       #返回
+pen.forward(-50)
+pen.right(30)
+pen.forward(-100)
+pen.pendown()
+turtle.done()