auto save

demo.py

-import random
-
-a = random.random()
-print(a*15)
\ No newline at end of file

my_tree.py

@@ -13,28 +13,6 @@ pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
-#分形树
-def tree(n):
-    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)
-        angle = random.random()
-        length = 1.5*random.random()
-        pen.forward(n)
-        pen.right(30*angle)
-        tree(n-10*length)
-        pen.left(2*30*angle)
-        tree(n-10*length)
-        pen.right(30*angle)
-        pen.up()
-        pen.backward(n)
-        pen.down()
-tree(60)
+
 
 turtle.done()

demo1.py → my_tree1.py

 import turtle
 import random
-
-def tree(n):
-    if n >= 0:
-        if n <= 12:
+def tree(n):  # 画树枝
+    if n>=0:
+        if n<= 12 :
             color_list = ['snow','lightcoral']
             color = random.choice(color_list)
             pen.color(color)
@@ -11,32 +10,30 @@ def tree(n):
         else:
             pen.color('sienna')
             pen.pensize(n/10)
-        angle = random.random()
-        lenght = 1.5*random.random()
+        pen.pensize(n/10)
         pen.forward(n)
-        pen.right(30*angle)
-        tree(n-10*lenght)
-        pen.left(2*30*angle)
-        tree(n-10*lenght)
-        pen.right(30*angle)
+        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')
-pen.speed(0)
 # 画布大小
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
-
-# 移动到起点
+pen.speed(0)
 pen.left(90)
 pen.up()
 pen.backward(150)    # 后退
 pen.down()
+# 移动到起点
+tree(60)
 
 
-tree(60)      
-
-turtle.done() 
+turtle.done()  

my_tree2.py

+import turtle
+import random
+
+pen = turtle.Turtle()
+pen.color('sienna')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('wheat')      # wheat小麦
+pen.speed(0)
+# 移动到起点
+pen.left(90)
+pen.up()
+pen.backward(150)    # 后退
+pen.down()
+
+def tree(n):  # 画树枝
+    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.pensize(n/10)
+        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()
+
+tree(60)
+turtle.done()
\ No newline at end of file