包括所有子文件夹
def filter_file(path,key):
dic_list = os.walk(path)
find_list = []
for i in dic_list:
if os.path.isdir(i[0]):
header = i[0]
file = i[2]
for f in file:
if f.rfind(key) != -1:
find_list.append([header,f])
return find_list
