擅长:python、mysql、java
<p>更好地使用<code>.lower()</code>方法-</p>
<pre><code>if __name__ == '__main__':
val='n'
while val.lower() != 'y': # This will work for 'y' and 'Y'
val = input("are we done ? [Y/n]: ")
exit()
</code></pre>
<p>你可以做得更好-</p>
<pre><code>if __name__ == '__main__':
while True:
val = input("are we done ? [Y/n]: ")
if val.lower() == 'y':
exit()
</code></pre>