save project

my_tree.py

@@ -12,4 +12,17 @@ pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
-turtle.done()
+
+pen.forward(100)
+pen.left(30)
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.right(60)
+pen.down()
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.left(30)
+pen.backward(100)
+turtle.done()
\ No newline at end of file

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()
+
+def tree(up):
+    if up >= 50:
+        pen.forward(up)
+        pen.left(30)
+        tree(up-10)
+        # pen.forward(up/2)
+        # pen.up()
+        # pen.backward(up/2)
+        pen.right(60)
+        tree(up-10)
+        pen.left(30)
+        # pen.down()
+        # pen.forward(up/2)
+        pen.up()
+        pen.backward(up)
+        # pen.left(30)
+        # pen.backward(up)
+        pen.down()
+tree(100)
+turtle.done()
\ No newline at end of file