save project

my_tree.py

-import turtle
+import turtle        
+def tree(n):
+    if n>=50:
+        pen.forward(n)
+        pen.right(30)
+        tree(n-15)
+        pen.left(60)
+        tree(n-15)
+        pen.right(30)
+        pen.up()
+        pen.backward(n)
+        pen.down()
 
 
 pen = turtle.Turtle()
 pen = turtle.Turtle()
 pen.color('sienna')
 pen.color('sienna')
 # 画布大小
 # 画布大小
 w = turtle.Screen()
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 w.bgcolor('wheat')      # wheat小麦
-
-# 移动到起点
 pen.left(90)
 pen.left(90)
-pen.up()
-pen.backward(150)    # 后退
-pen.down()
-pen.forward(100)
-pen.right(30)
-pen.fd(50)
-pen.up()
-pen.fd(-50)
-pen.left(60)
-pen.down()
-pen.fd(50)
-pen.up()
-pen.fd(-50)
-pen.left(150)
-pen.fd(100)
+tree(120)
+# 移动到起点
+# pen.left(90)
+# pen.up()
+# pen.backward(150)    # 后退
+# pen.down()
+# pen.forward(100)
+# pen.right(30)
+# pen.fd(50)
+# pen.up()
+# pen.fd(-50)
+# pen.left(60)
+# pen.down()
+# pen.fd(50)
+# pen.up()
+# pen.fd(-50)
+# pen.left(150)
+# pen.fd(100)
 turtle.done()
 turtle.done()