擅长:python、mysql、java
<p>从<a href="https://docs.python.org/3/library/subprocess.html#subprocess.Popen.communicate" rel="nofollow">docs</a>:</p>
<pre><code>communicate(self, input=None)
Interact with process: Send data to stdin. Read data from
stdout and stderr, until end-of-file is reached. Wait for
process to terminate. The optional input argument should be a
string to be sent to the child process, or None, if no data
should be sent to the child.
</code></pre>
<p>注意,<code>Wait for process to terminate.</code>我想你需要的是{a2}。它不在标准库中,但它可以满足您的需要。在</p>
<p>示例:</p>
^{pr2}$
<p>输出:</p>
<pre><code>It works
</code></pre>