auto save

my_tree.py

@@ -2,18 +2,28 @@ import turtle
 import random
 import random
 
 
 def tree(n):
 def tree(n):
-    if n >= 0:
+    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('sienna')
+            pen.pensize(n/10)  
         pen.forward(n)
         pen.forward(n)
-        pen.right(30)
-        tree(n-10)
-        pen.left(60)
-        tree(n-10)
-        pen.right(30)
+        angle = random.randint(0,30)
+        length = random.randint(1,15)
+        pen.right(angle)
+        tree(n-length)
+        pen.left(2*angle)
+        tree(n-length)
+        pen.right(angle)
         pen.up()
         pen.up()
         pen.backward(n)
         pen.backward(n)
         pen.down()
         pen.down()
 pen = turtle.Turtle()
 pen = turtle.Turtle()
-tree(100)
+
 pen.color('sienna')
 pen.color('sienna')
 # 画布大小
 # 画布大小
 w = turtle.Screen()
 w = turtle.Screen()
@@ -25,12 +35,6 @@ pen.up()
 pen.backward(150)    # 后退
 pen.backward(150)    # 后退
 pen.down()
 pen.down()
 
 
+tree(60)
 
 
-pen.down()
-pen.forward(100)
-pen.right(30)
-pen.forward(50)
-pen.backward(50)
-pen.left(60)
-pen.forward(50)
 turtle.done()
 turtle.done()
\ No newline at end of file

test.py

+import turtle
+import random
+
+def tree(n):
+    if n >= 0:
+        if n<=12:
+            color_list = ['snow','lightcoral']
+            color = random.choices(color_list)
+            pen.color(color)
+            pen.pensize(n/3)
+        else:
+            pen.color('sienna')
+            pen.pensize(n/10)kjf
+        pen.forward(n)
+        angle = random.randint(0,30)
+        length = random.randint(1,15)
+        pen.right(angle)
+        tree(n-length)
+        pen.left(2*angle)
+        tree(n-length)
+        pen.right(angle)
+        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()
\ No newline at end of file