擅长:python、mysql、java
<p>要使用<code>.read()</code>,您需要打开文件进行读取</p>
<p>您只使用<code>"wb"</code>打开它进行写入。在</p>
<p>使用<code>"rb"</code>读取,<code>"wb"</code>写入,使用<code>"ab"</code>附加</p>
<p>添加<code>'+'</code>类似<code>"ab+"</code>允许同时读取和附加/写入</p>
<p>有不同模式的参考<a href="http://www.tutorialspoint.com/python/python_files_io.htm" rel="nofollow">here</a></p>
<p>示例:</p>
<pre><code>with open("filepath/file.ext", "ab+") as fo:
old = fo.read() # this auto closes the file after reading, which is a good practice
fo.write("something") # to the end of the file
</code></pre>