import os
import time
import subprocess
from concurrent.futures import ThreadPoolExecutor
import re

def ping_call(network,num):
        ipaddr='ping '+network+"."+str(num)
        command=ipaddr+' -n 2 -w 1'
        print(command)
        result=subprocess.Popen(command,
                               shell=True,stdout=subprocess.PIPE)
        s=result.stdout.read().decode('gbk')
        e = "TTL" in s
        if e:
            print('ip地址：{} ping ok'.format(ipaddr))
        else:
            print('ip地址：{} ping fall'.format(ipaddr))

if __name__ == '__main__':
    network=input('请输入网段>>>').strip()
    host=input('请输入主机范围以空格隔开>>>').strip().split()
    a,b=host[0],host[1]
    print(network.split('.'))
    if len(network.split('.'))==3 and a.isdigit() and b.isdigit() and re.match('\d{1,3}\.\d{1,3}\.\d{1,3}',network):
        a=int(a)
        b=int(b)
        start_time = time.time()
        res_l=[]
        pool=ThreadPoolExecutor(50)
        for line in range(a,b+1):
            ret=pool.submit(ping_call,network,line)
            res_l.append(ret)
        pool.shutdown()
        print("程序耗时{:.2f}".format(time.time() - start_time))

#!/usr/bin/python3.6
for i in range(1,10):
  for j in range(1,i+1):
    print(i,'*',j,'=',i*j,end='\t')
  print('\n')

print(''.join([str(a) +"*"+ str(b) +"="+ str(a * b) + str('\n' if a==b else '\t') for a in range(1, 10) for b in range(1, a+1)]))

[root@mylinux python-script]# cat guan-dao.py

import os

import subprocess

var=subprocess.getoutput("awk -F ':' '{print $1,$7}' /etc/passwd")#var结果时字符串，使用了shell命令

os.environ['var']=var  #将变量传入shell的空间

var=list(var.split("\n")) #以回车为分割变成列表

for i in var:

  i=i.split(" ")

  if i[1].startswith('/s'):

    print(i)

print('当前执行用户是：')

print(os.popen('whoami').read()) #读取当前用户，这样就使用了shell命令

result=os.popen("echo $var|awk  '{for(i=2;i<=NF;i=i+2){if($i ~ /^\/b.*sh$/)print $(i-1),$i}}'").read() #使用shell命令，打印以/b开头sh结尾的字段

#result=os.popen("echo $var|awk  '{for(i=2;i<=NF;i=i+2)print $i}'").read()

print(result)

['bin', '/sbin/nologin']

['daemon', '/sbin/nologin']

['adm', '/sbin/nologin']

['lp', '/sbin/nologin']

['shutdown', '/sbin/shutdown']

['halt', '/sbin/halt']

['mail', '/sbin/nologin']

['operator', '/sbin/nologin']

['games', '/sbin/nologin']

['ftp', '/sbin/nologin']

['nobody', '/sbin/nologin']

['systemd-bus-proxy', '/sbin/nologin']

['systemd-network', '/sbin/nologin']

['dbus', '/sbin/nologin']

['polkitd', '/sbin/nologin']

['abrt', '/sbin/nologin']

['unbound', '/sbin/nologin']

['tss', '/sbin/nologin']

['libstoragemgmt', '/sbin/nologin']

['rpc', '/sbin/nologin']

['colord', '/sbin/nologin']

['usbmuxd', '/sbin/nologin']

['saslauth', '/sbin/nologin']

['geoclue', '/sbin/nologin']

['setroubleshoot', '/sbin/nologin']

['rtkit', '/sbin/nologin']

['qemu', '/sbin/nologin']

['radvd', '/sbin/nologin']

['chrony', '/sbin/nologin']

['ntp', '/sbin/nologin']

['sssd', '/sbin/nologin']

['rpcuser', '/sbin/nologin']

['nfsnobody', '/sbin/nologin']

['pulse', '/sbin/nologin']

['gdm', '/sbin/nologin']

['gnome-initial-setup', '/sbin/nologin']

['avahi', '/sbin/nologin']

['postfix', '/sbin/nologin']

['sshd', '/sbin/nologin']

['tcpdump', '/sbin/nologin']

['apache', '/sbin/nologin']

['zabbix', '/sbin/nologin']

当前执行用户是：

root

root /bin/bash

liming /bin/bash

zhangsan /bin/bash

pyenv /bin/bash

wang5 /bin/bash

mysql /bin/bash

[root@localhost aaa]# cat tt.py

#!/usr/bin/python3

#

import re

with open('hhh.txt','r')as file:

   content=file.readlines()

   for i in content:

     if re.match("2019/7/11 (13|15):\d{2}\s\d{3}",i): #\s为空格，\d为数字 2019/7/11 (13|15):\d{2}\s\d{2}包括 2019/7/11 (13|15):\d{2}\s\d{3}匹配的内容
                                                        #如需精确可以加$  2019/7/11 (13|15):\d{2}\s\d{2}$

     print(i) 

[root@localhost aaa]# python3 tt.py 
2019/7/11 15:00 328