save project

diy2.py

+import turtle
+import random
+
+def tree(n):  # 画树枝
+    if n>=0:
+        pen.forward(n)
+        pen.right(30)
+        tree(n-10)
+        pen.left(60)
+        tree(n-10)
+        pen.right(30)
+        pen.up()
+        pen.backward(n)
+        pen.down()
+
+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()
+
+tree(60)
+turtle.done()

my_tree.py

 import turtle
 
+def tree(n):
+    if n >= 50 :
+        pen.right(45)
+        pen.down()
+        pen.forward(n)
+        pen.right(30)
+        tree(n - 50)
+        pen.left(30)
+        pen.left(30)
+        tree(n - 50)
+        pen.right(30)
+        pen.up()
+        pen.backward(n)
+        pen.down()
 pen = turtle.Turtle()
 pen.color('sienna')
 # 画布大小
@@ -12,4 +26,24 @@ pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
-turtle.done()
+def tright(f,jiaodu,bw):
+    pen.right(jiaodu)
+    pen.forward(f)
+    pen.up()
+    pen.backward(bw)
+    pen.down()
+def tleft(f,jiaodu,bw):
+    pen.left(jiaodu)
+    pen.forward(f)
+    pen.up()
+    pen.backward(bw)
+    pen.down()
+tright(50,30,50)
+tleft(50,60,50)
+pen.right(30)
+pen.down()
+pen.backward(100)
+pen.up()
+pen.forward(100)
+tree(100)
+turtle.done()
\ No newline at end of file