auto save

my_tree.py

@@ -15,14 +15,14 @@ pen.backward(150)    # 后退
 pen.down()
 
 def tree(n):
-    if n>=0:
-        if n<=12:
+    if n >= 0:
+        if n <= 12:
             color_list = ['snow','lightcoral']
             color = random.choice(color_list)
             pen.color(color)
             pen.pensize(n/3)
         else:
-            pen.color("sinnea")            
+            pen.color("sienna")            
             pen.pensize(n/10)
         pen.fd(n)
         angle = random.random()