python os读取文件

<pre class="markdow-doc">

import os
def dir_walk(dirname):
    filelist = []
    for root, dirs, files in os.walk(dirname):#root dir files 都是类 
        for name in dirs:
            filelist.append(os.path.join(root, name))
    print(filelist)
    return filelist
dirname = r'D:\BaiduMusic\virus'#r是转义，要不就用双斜杠
print(dir_walk(dirname))
</pre>