擅长:python、mysql、java
<p><code>for file in os.listdir(PATH)</code>中的“file”是字符串,因此<code>file = file + 30</code>无效。
您应该尝试:</p>
<pre><code>import os
import shutil
PATH = './Folder1/'
DEST = './Folder2/'
filenames = os.listdir(PATH)
for i in range(1, len(filenames), 30):
shutil.copyfile(PATH + filenames[i], DEST)
</code></pre>