go 正则表达式

package main

import (
	"fmt"
	"regexp"
)

func main() {
	line := "2022/11/25  19:32   <DIR>   catalog  2022/11/25  19:32    <DIR>   catalog"

	reg := regexp.MustCompile(`([\d/]+)\s+(\d+:\d+)\s+(<DIR>)\s+(\w+)`)
	if reg == nil {
		panic("命令行解析失败")
	}

	// 符合正则匹配的，可能有多条
	r := reg.FindAllStringSubmatch(line, -1)
	for _, one := range r {
		fmt.Printf("解析结果为 %v", one)
		for _, v := range one {
			fmt.Println(v)
		}
	}
}

python 正则

import re

text = "http://178.162.209.4:3000"
prog = re.compile("([https:]+)\/\/([\d+\.:]*)")
a = prog.search(text)
# 返回数组
print(a.groups()[1])