save project

my_tree.py

+import turtle
+
+pen = turtle.Turtle()
+pen.color('pink')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('brown')      # wheat小麦
+
+# 移动到起点
+
+pen.right(-90)
+pen.up()
+pen.forward(-150)    # 后退
+pen.down()
+def binbin(n):
+    if n>=10:
+        pen.backward(-n)
+        pen.right(30)
+        binbin(n-22)
+        pen.right(-60)
+        pen.down()
+        binbin(n-22)
+        pen.left(-30)
+        pen.forward(-n)
+binbin(123)
+
+
+
+turtle.done()