save project

my_tree.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(1000000)
+def my_pen(n):
+    if n >= 0:
+        pen.down()
+        erjingzhi = random.randint(0,1)
+        lenth = random.randint(0,15)
+        if n-lenth <= 12:
+            pen.pensize(n/3)
+            if erjingzhi == 0:
+                pen.color("snow")
+            elif erjingzhi == 1:
+                pen.color("lightcoral")
+        else:
+            pen.pensize(n/10)
+            pen.color("sienna")
+        jiaodu = random.randint(0,30)
+        pen.forward(n) 
+        pen.right(jiaodu)
+        my_pen(n-lenth)  
+        pen.left(2*jiaodu)
+        my_pen(n-lenth)
+        pen.right(jiaodu) 
+        pen.up()
+        pen.backward(n)
+# 移动到起点
+pen.left(90)
+pen.up()
+pen.backward(100)
+pen.down()
+my_pen(60)
+'''
+pen.right(30)
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.left(60)
+pen.down()
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.right(30)
+pen.backward(100)
+'''
+turtle.done()
+print("WSSB")