擅长:python、mysql、java
<p>您可以使用<code>time.time()</code>执行类似的操作。在</p>
<pre><code>import time
...
start = time.time()
answer = raw_input('enter solution')
finish = time.time()
if finish - start > 20:
#failure condition
else:
#success condition
</code></pre>