如何使用鍵盤按下事件來停止itertools.count（）？

Question

在下面的程序

import itertools 
for i in itertools.count(): 
    print (i) 

我想用鍵盤按事件停止這種活動。

Answer 1

您可以等待KeyboardInterrupt異常，然後全身而退：

import itertools 

try: 
    # Stay inside the loop until Ctrl+C is pressed 
    for i in itertools.count(): 
     print (i) 
except KeyboardInterrupt: 
    pass 
# Go on...