How to censor IP addresses in a file with Python?

I have a log file containing some Whois entries with relative IP addresses which I want to censor like:

日头当空照什么歌？

k8s部署redis哨兵的实现

目录一、准备redis镜像二、准备k8s yml—redis-sentinel.yml三、查看redis哨兵信息四、连接redis哨兵一、准备redis镜像