python删除文件

删除qq文件夹中2013年12-31之前的文件
import os
import time
import datetime

timeline = datetime.datetime(2013,12,31)
tl = time.mktime(timeline.timetuple())

rootdir = r'C:\Documents and Settings\Administrator.CHINA-C58199F8B\My Documents\Tencent Files\xxxxxxxx\Image'
for basedirs, dirs, files in os.walk(rootdir):
    for f in files:
        f_full = os.path.join(basedirs, f)
        print f_full
        if os.path.getmtime(f_full) < tl:
            os.remove(f_full)

os.walk实现的是遍历每个目录