python之seek的使用

import time
with open ('access.log',mode='rb') as f:
#1将指针跳到文件末尾
#f.read() #错误做法
	f.seek(0,2)
	while True:
		line = f.readline()
		if len(line) == 0:
			time.sleep(0.3)
		else:
			print(line.decode('utf-8')

下面往acess.log里面输入日志,上面可以动态监测到日志的一个变化

with open('access.log',mode='at',encoding='utf-8')as f:
	f.write('20210312851 xxx转账100w\n')
	f.write('20210312852 yyy转账200w\n')

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转载自blog.csdn.net/weixin_47237915/article/details/114685090