监听用户输入内容

f = open("D:\\Temp\\minitor.txt",encoding='utf-8')
while 1:
    li = f.readline()
    if li.strip():
        print(li)

优化：

def fun(filename):
    f=open(filename,encoding='utf-8')
    while 1:
        li = f.readline()
        if li.strip():
            yield li

ret = fun("D:\\Temp\\minitor.txt")
for i in ret:
    if "python" in i:
        print(i)