授权

使用__getattr__ 进行中转
 1 import time
 2 
 3 
 4 class Open:
 5     def __init__(self, filename, mode='r', encoding='utf-8'):
 6         self.filename = open(filename, mode)
 7         self.mode = mode
 8         self.encoding = encoding
 9 
10     def write(self, line):
11         wr = getattr(self.filename, 'write')
12         wr(time.asctime() + line)
13 
14     def __getattr__(self, item):
15         return getattr(self.filename, item)
16 
17 
18 f = Open('aaa.txt', 'w', encoding='utf-8')
19 print(f.filename)
20 f.write('nihao worlssd!')
21 print(f.read)
22 输出：