save project

my_tree.py

+import turtle
+import random
+def t(n):
+    pen.pensize(n/10)
+    if n<=12:
+        pen.pensize(n/3)
+        pen.pencolor(random.choice(['snow','lightcoral']))
+    else:
+        pen.pencolor('sienna')
+        pen.pensize(n/10)
+    if n>=0:
+        a=random.randint(0,30)
+        l=random.randint(1,15)
+        
+        
+        
+        pen.pd()
+        pen.fd(n)
+        
+        pen.right(a)
+        t(n-l)
+        pen.left(a*2)
+        t(n-l)
+        pen.right(a)
+        pen.pu()
+        pen.backward(n)
+pen = turtle.Turtle()
+pen.speed(0)
+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
+print(t(70))
+turtle.done()