监听文件输入的例子

 1 #基础
 2 def tail(filename):
 3     f = open(filename,encoding=‘utf-8‘)
 4     while True:
 5         line = f.readline()
 6         if line:
 7             print("****",line.strip())
 8 tail(‘file‘)
 9 
10 #进阶
11 def tail(filename):
12     f = open(filename,encoding=‘utf-8‘)
13     while True:
14         line = f.readline()
15         if line.strip():
16             yield line.strip()
17 
18 g = tail(‘file‘)
19 for i in g:
20     #if ‘python‘ in i:
21         print(‘***‘,i)