擅长:python、mysql、java
<blockquote>
<p><code>import os</code></p>
</blockquote>
<p>你已经成功了一半</p>
<p><a href="https://docs.python.org/3/library/os.html#os.getcwd" rel="nofollow noreferrer">rest of it</a>是:</p>
<pre><code>print(os.getcwd())
</code></pre>
<p>当然,你不需要知道这个值,
因为<code>a_data.txt</code>或<code>./a_data.txt</code>就足够了</p>
<p>作为旁注,最好用<code>with</code><a href="https://docs.python.org/3/reference/datamodel.html#context-managers" rel="nofollow noreferrer">handler</a>结束:</p>
<pre><code>with open('a_data.txt', 'a') as new_file:
new_file.write(data)
</code></pre>
<p>习惯性地使用资源管理器
从来不用说“对不起,忘记关了!”</p>