擅长:python、mysql、java
<p>您可以使用非常方便的发电机:</p>
<pre><code>import tkinter as tk
import random
def pickUp(n):
randArrow = ['left', 'right', 'down', 'up']
while n>0:
yield random.choice(randArrow)
n -= 1
def randomArrows():
try:
print( next(a) )
root.after(10,randomArrows)
except:
pass
a = pickUp(5)
root = tk.Tk()
root.after(10,randomArrows)
</code></pre>