Python实现删除当前目录下重复文件

用Python实现删除当前目录下重复文件：

import os, sys
d = os.getcwd()
all_filename_list = [i for i in os.listdir('.') if os.path.isfile(i)]
import hashlib
not_duplicate_arr = []
for filename in all_filename_list:
    full_filename = d + '/' + filename
    with open(full_filename, 'rb') as file:
        file_md5=hashlib.md5(file.read()).hexdigest()
        if file_md5 not in not_duplicate_arr:
            not_duplicate_arr.append(file_md5)
        else:
            os.remove(full_filename)