擅长:python、mysql、java
<p>在你的第一次跑步中</p>
<pre><code>yield a # will return 1
t = a # which is 1
a = b # which is 1
b = t + b # which is 2 as t = 1 and b = 1
</code></pre>
<p>在你的第二次跑步中</p>
<pre><code>yield a # will return 1
t = a # which is 1
a = b # which is 2
b = t + b # which is 3 as t = 1 and b = 2
</code></pre>
<p>在你的第三次跑步中</p>
<pre><code>yield a # will return 2
t = a # which is 2
a = b # which is 3
b = t + b # which is 5 as t = 2 and b = 3
</code></pre>
<p>在你的第四次跑步中</p>
<pre><code>yield a # will return 3
t = a # which is 3
a = b # which is 5
b = t + b # which is 8 as t = 3 and b = 5
</code></pre>
<p>等等。。。你知道吗</p>