刚学的递归写了个画树代码运行不了

Question

```
from turtle import Turtle

p=Turtle

def tree(plist,l,a,f):

if l<5:
    lst=[]
    for i in plist:
        p.forward(l)
        q=p.clone()
        p.right(a)
        q.left(a)
        lst.append(q)
        lst.append(p)
    tree(lst,l*f,a,f)

def main():
p.pencolor('green')
p.hideturtle()
p.getscreen().tracer(30,0)
p.right(90)
p.penup()
p.goto(x,y)
p.pendown()
t=tree([i],200,65,0.5)
main()```

Answer 1

你for 循环中定义的p变量与全局变量p重名了