Python3之yeild监听器应用

import timedef monitor(filename):    with open(filename, encoding='utf-8') as f:        f.seek(0, 2)  # 从文件末尾算起        while True:            line = f.readline()  # 读取文件中新的文本行            if not line:                time.sleep(0.1)                continue            yield linefor line in monitor('a.txt'):    print(line, end='')