save project

my_tree.py

 import turtle
 
+def tree(n):
+    if 50>= 50:       
+    pen.fd(n)
+    pen.right(30)
+    tree(n-50)
+    
+
 pen = turtle.Turtle()
 pen.color('sienna')
 # 画布大小
@@ -12,4 +19,4 @@ pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
-turtle.done()
+turtle.done()
\ No newline at end of file