批量读取文件名

import os

names = os.listdir(r"文件夹路径")
i=0
#i用于统计文件数量
f = open('password.txt','w')
for filename in names:
    index = filename.rfind('.')
    name = filename[:index]
    f.write(name+'\n')
    i=i+1
print(i)