笺注：这是使用TCP端口实现的Ping
Windows安装第三方库：（tcping）
C:\Users\jacky>pip3 install tcping -i http://mirrors.aliyun.com/pypi/simple --trusted-host=mirrors.aliyun.com
Windows卸载第三方库：（tcping）
C:\Users\jacky\Desktop>pip3 uninstall tcping -y
Uninstalling tcping-0.1.1rc1:
Successfully uninstalled tcping-0.1.1rc1
######
手动运行tcping：（Ping三次目标主机的TCP 80端口；省略“-p”时就是TCP 80端口）
C:\Users\jacky>tcping blog.zhuohua.store -c 3 --report
Connected to blog.zhuohua.store[:80]: seq=1 time=180.01 ms
Connected to blog.zhuohua.store[:80]: seq=2 time=27.71 ms
Connected to blog.zhuohua.store[:80]: seq=3 time=75.96 ms
+--------------------+------+-----------+--------+--------------+---------+----------+---------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+----------+---------+
| blog.zhuohua.store | 80 | 3 | 0 | 100.00% | 27.71ms | 180.01ms | 94.56ms |
+--------------------+------+-----------+--------+--------------+---------+----------+---------+
C:\Users\jacky>
######
手动运行tcping：（Ping四次目标主机的TCP 80端口）
C:\Users\jacky\Desktop>tcping 47.75.39.177 -p 80 -c 4 --report
Connected to 47.75.39.177[:80]: seq=1 time=25.91 ms
Connected to 47.75.39.177[:80]: seq=2 time=28.09 ms
Connected to 47.75.39.177[:80]: seq=3 time=18.23 ms
Connected to 47.75.39.177[:80]: seq=4 time=26.96 ms
+--------------+------+-----------+--------+--------------+---------+---------+---------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------+------+-----------+--------+--------------+---------+---------+---------+
| 47.75.39.177 | 80 | 4 | 0 | 100.00% | 18.23ms | 28.09ms | 24.80ms |
+--------------+------+-----------+--------+--------------+---------+---------+---------+
C:\Users\jacky\Desktop>
######
手动运行tcping：（Ping五次目标主机的TCP 22端口）
C:\Users\jacky>tcping blog.zhuohua.store -p 22 -c 5 --report
Connected to blog.zhuohua.store[:22]: seq=1 time=319.45 ms
Connected to blog.zhuohua.store[:22]: seq=2 time=138.39 ms
Connected to blog.zhuohua.store[:22]: seq=3 time=40.23 ms
Connected to blog.zhuohua.store[:22]: seq=4 time=39.01 ms
Connected to blog.zhuohua.store[:22]: seq=5 time=32.16 ms
+--------------------+------+-----------+--------+--------------+---------+----------+----------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+----------+----------+
| blog.zhuohua.store | 22 | 5 | 0 | 100.00% | 32.16ms | 319.45ms | 113.85ms |
+--------------------+------+-----------+--------+--------------+---------+----------+----------+
C:\Users\jacky>
######
手动运行tcping：（Ping十次目标主机的TCP 21端口；实验中，目标主机的TCP 21端口没有打开）
C:\Users\jacky\Desktop>tcping 47.75.39.177 -p 21 -c 10 --report
Connected to 47.75.39.177[:21]: seq=1 time out!
Connected to 47.75.39.177[:21]: seq=2 time out!
Connected to 47.75.39.177[:21]: seq=3 time out!
Connected to 47.75.39.177[:21]: seq=4 time out!
Connected to 47.75.39.177[:21]: seq=5 time out!
Connected to 47.75.39.177[:21]: seq=6 time out!
Connected to 47.75.39.177[:21]: seq=7 time out!
Connected to 47.75.39.177[:21]: seq=8 time out!
Connected to 47.75.39.177[:21]: seq=9 time out!
Connected to 47.75.39.177[:21]: seq=10 time out!
+--------------+------+-----------+--------+--------------+---------+---------+---------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------+------+-----------+--------+--------------+---------+---------+---------+
| 47.75.39.177 | 21 | 0 | 10 | 0.00% | 0.00ms | 0.00ms | 0.00ms |
+--------------+------+-----------+--------+--------------+---------+---------+---------+
C:\Users\jacky\Desktop>
######
脚本“xx.py”的内容：（在脚本中使用tcping）
#coding=utf-8
from tcping import Ping
import datetime
dt = datetime.datetime.now()
def ping_check(Host_1,TCP_port_1,Ping_times):
try:
ping = Ping(Host_1, TCP_port_1, 60)
ping.ping(Ping_times)
ret = ping.result.rows
for r in ret:
print(r)
ret = ping.result.raw
print(ret)
ret = ping.result.table
print(ret)
except Exception as e:
print(e)
if __name__ == '__main__':
print()#输出空行
print()
Key_tt = dt.strftime('%Y%m%d_%H%M%S')
print("检测时间：",Key_tt) #输出具体时间
print()
print("目标主机'blog.zhuohua.store'的TCP 80端口的Ping结果：")
Host_1 = 'blog.zhuohua.store' #目标主机
TCP_port_1 = 80 #TCP端口
Ping_times = 10 #Ping的次数
ping_check(Host_1,TCP_port_1,Ping_times)
print()
print("目标主机'blog.zhuohua.store'的TCP 22端口的Ping结果：")
Host_1 = 'blog.zhuohua.store'
TCP_port_1 = 22
Ping_times = 10
ping_check(Host_1,TCP_port_1,Ping_times)
print()
print("目标主机'47.75.39.177'的TCP 21端口的Ping结果：")
Host_1 = '47.75.39.177'
TCP_port_1 = 21
Ping_times = 10
ping_check(Host_1,TCP_port_1,Ping_times)
运行脚本，并把输出结果写入（追加）到指定文件：
C:\Users\jacky>cd Desktop
C:\Users\jacky\Desktop>python xx.py >> d:/1.txt
C:\Users\jacky\Desktop>
文件d:\1.txt自动记录的数据：（实验中运行了两次脚本；目标主机的TCP 21端口没有打开）
检测时间： 20210227_202006
目标主机'blog.zhuohua.store'的TCP 80端口的Ping结果：
Connected to blog.zhuohua.store[:80]: seq=1 time=6262.67 ms
Connected to blog.zhuohua.store[:80]: seq=2 time=1235.21 ms
Connected to blog.zhuohua.store[:80]: seq=3 time=36.30 ms
Connected to blog.zhuohua.store[:80]: seq=4 time=211.46 ms
Connected to blog.zhuohua.store[:80]: seq=5 time=134.09 ms
Connected to blog.zhuohua.store[:80]: seq=6 time=2174.17 ms
Connected to blog.zhuohua.store[:80]: seq=7 time=32.99 ms
Connected to blog.zhuohua.store[:80]: seq=8 time=320.18 ms
Connected to blog.zhuohua.store[:80]: seq=9 time=30.25 ms
Connected to blog.zhuohua.store[:80]: seq=10 time=38.85 ms
Statistics(host='blog.zhuohua.store', port=80, successed=10, failed=0, success_rate='100.00%', minimum='30.25ms', maximum='6262.67ms', average='1047.62ms')
--- blog.zhuohua.store[:80] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 30.25ms, maximum = 6262.67ms, average = 1047.62ms
+--------------------+------+-----------+--------+--------------+---------+-----------+-----------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+-----------+-----------+
| blog.zhuohua.store | 80 | 10 | 0 | 100.00% | 30.25ms | 6262.67ms | 1047.62ms |
+--------------------+------+-----------+--------+--------------+---------+-----------+-----------+
目标主机'blog.zhuohua.store'的TCP 22端口的Ping结果：
Connected to blog.zhuohua.store[:22]: seq=1 time=28.04 ms
Connected to blog.zhuohua.store[:22]: seq=2 time=35.73 ms
Connected to blog.zhuohua.store[:22]: seq=3 time=173.46 ms
Connected to blog.zhuohua.store[:22]: seq=4 time=28.08 ms
Connected to blog.zhuohua.store[:22]: seq=5 time=36.96 ms
Connected to blog.zhuohua.store[:22]: seq=6 time=30.02 ms
Connected to blog.zhuohua.store[:22]: seq=7 time=38.02 ms
Connected to blog.zhuohua.store[:22]: seq=8 time=300.39 ms
Connected to blog.zhuohua.store[:22]: seq=9 time=21.99 ms
Connected to blog.zhuohua.store[:22]: seq=10 time=33.32 ms
Statistics(host='blog.zhuohua.store', port=22, successed=10, failed=0, success_rate='100.00%', minimum='21.99ms', maximum='300.39ms', average='72.60ms')
--- blog.zhuohua.store[:22] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 21.99ms, maximum = 300.39ms, average = 72.60ms
+--------------------+------+-----------+--------+--------------+---------+----------+---------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+----------+---------+
| blog.zhuohua.store | 22 | 10 | 0 | 100.00% | 21.99ms | 300.39ms | 72.60ms |
+--------------------+------+-----------+--------+--------------+---------+----------+---------+
目标主机'47.75.39.177'的TCP 21端口的Ping结果：
[WinError 10061] 由于目标计算机积极拒绝，无法连接。
检测时间： 20210227_202529
目标主机'blog.zhuohua.store'的TCP 80端口的Ping结果：
Connected to blog.zhuohua.store[:80]: seq=1 time=1205.81 ms
Connected to blog.zhuohua.store[:80]: seq=2 time=37.23 ms
Connected to blog.zhuohua.store[:80]: seq=3 time=39.97 ms
Connected to blog.zhuohua.store[:80]: seq=4 time=1324.22 ms
Connected to blog.zhuohua.store[:80]: seq=5 time=1459.57 ms
Connected to blog.zhuohua.store[:80]: seq=6 time=1238.42 ms
Connected to blog.zhuohua.store[:80]: seq=7 time=1173.27 ms
Connected to blog.zhuohua.store[:80]: seq=8 time=24.22 ms
Connected to blog.zhuohua.store[:80]: seq=9 time=38.54 ms
Connected to blog.zhuohua.store[:80]: seq=10 time=27.21 ms
Statistics(host='blog.zhuohua.store', port=80, successed=10, failed=0, success_rate='100.00%', minimum='24.22ms', maximum='1459.57ms', average='656.85ms')
--- blog.zhuohua.store[:80] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 24.22ms, maximum = 1459.57ms, average = 656.85ms
+--------------------+------+-----------+--------+--------------+---------+-----------+----------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+-----------+----------+
| blog.zhuohua.store | 80 | 10 | 0 | 100.00% | 24.22ms | 1459.57ms | 656.85ms |
+--------------------+------+-----------+--------+--------------+---------+-----------+----------+
目标主机'blog.zhuohua.store'的TCP 22端口的Ping结果：
Connected to blog.zhuohua.store[:22]: seq=1 time=177.01 ms
Connected to blog.zhuohua.store[:22]: seq=2 time=134.69 ms
Connected to blog.zhuohua.store[:22]: seq=3 time=21.88 ms
Connected to blog.zhuohua.store[:22]: seq=4 time=31.04 ms
Connected to blog.zhuohua.store[:22]: seq=5 time=323.82 ms
Connected to blog.zhuohua.store[:22]: seq=6 time=22.56 ms
Connected to blog.zhuohua.store[:22]: seq=7 time=21.51 ms
Connected to blog.zhuohua.store[:22]: seq=8 time=18.30 ms
Connected to blog.zhuohua.store[:22]: seq=9 time=23.48 ms
Connected to blog.zhuohua.store[:22]: seq=10 time=2166.56 ms
Statistics(host='blog.zhuohua.store', port=22, successed=10, failed=0, success_rate='100.00%', minimum='18.30ms', maximum='2166.56ms', average='294.08ms')
--- blog.zhuohua.store[:22] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 18.30ms, maximum = 2166.56ms, average = 294.08ms
+--------------------+------+-----------+--------+--------------+---------+-----------+----------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+-----------+----------+
| blog.zhuohua.store | 22 | 10 | 0 | 100.00% | 18.30ms | 2166.56ms | 294.08ms |
+--------------------+------+-----------+--------+--------------+---------+-----------+----------+
目标主机'47.75.39.177'的TCP 21端口的Ping结果：
[WinError 10061] 由于目标计算机积极拒绝，无法连接。
############
############
结合Win7系统自带的任务计划，实现自动运行Python脚本：
管理工具》任务计划程序》创建任务：
新建触发器：（持续时间选择“无限期”，重复任务间隔选择5分钟）
新建操作：（ 在这里，Python脚本的后缀必须为 .pyw ）
脚本“yy.pyw”的内容：（调用Windows命令，运行另外一个脚本“xx.py”，并把输出结果写入（追加）到指定文件）
#coding=utf-8
import os
os.system("python C:/Users/jacky/Desktop/xx.py >> d:/1.txt")
新建操作完成：（ 在这里，Python脚本的后缀必须为 .pyw ）
自定义任务的启动条件：
要输入管理员密码：
任务计划配置完成，Python脚本“yy.pyw”会无限期地每隔5分钟运行一次：
文件d:\1.txt自动记录的数据：（以下只是其中连续三次的结果）
检测时间： 20211210_205134
目标主机'blog.zhuohua.store'的TCP 80端口的Ping结果：
Connected to blog.zhuohua.store[:80]: seq=1 time=227.12 ms
Connected to blog.zhuohua.store[:80]: seq=2 time=33.38 ms
Connected to blog.zhuohua.store[:80]: seq=3 time=31.76 ms
Connected to blog.zhuohua.store[:80]: seq=4 time=30.44 ms
Connected to blog.zhuohua.store[:80]: seq=5 time=272.51 ms
Connected to blog.zhuohua.store[:80]: seq=6 time=33.82 ms
Connected to blog.zhuohua.store[:80]: seq=7 time=23.01 ms
Connected to blog.zhuohua.store[:80]: seq=8 time=237.34 ms
Connected to blog.zhuohua.store[:80]: seq=9 time=36.69 ms
Connected to blog.zhuohua.store[:80]: seq=10 time=309.75 ms
Statistics(host='blog.zhuohua.store', port=80, successed=10, failed=0, success_rate='100.00%', minimum='23.01ms', maximum='309.75ms', average='123.58ms')
--- blog.zhuohua.store[:80] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 23.01ms, maximum = 309.75ms, average = 123.58ms
+--------------------+------+-----------+--------+--------------+---------+----------+----------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+----------+----------+
| blog.zhuohua.store | 80 | 10 | 0 | 100.00% | 23.01ms | 309.75ms | 123.58ms |
+--------------------+------+-----------+--------+--------------+---------+----------+----------+
目标主机'blog.zhuohua.store'的TCP 22端口的Ping结果：
Connected to blog.zhuohua.store[:22]: seq=1 time=53.48 ms
Connected to blog.zhuohua.store[:22]: seq=2 time=27.17 ms
Connected to blog.zhuohua.store[:22]: seq=3 time=28.61 ms
Connected to blog.zhuohua.store[:22]: seq=4 time=271.04 ms
Connected to blog.zhuohua.store[:22]: seq=5 time=131.02 ms
Connected to blog.zhuohua.store[:22]: seq=6 time=28.37 ms
Connected to blog.zhuohua.store[:22]: seq=7 time=118.45 ms
Connected to blog.zhuohua.store[:22]: seq=8 time=128.59 ms
Connected to blog.zhuohua.store[:22]: seq=9 time=338.73 ms
Connected to blog.zhuohua.store[:22]: seq=10 time=33.51 ms
Statistics(host='blog.zhuohua.store', port=22, successed=10, failed=0, success_rate='100.00%', minimum='27.17ms', maximum='338.73ms', average='115.90ms')
--- blog.zhuohua.store[:22] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 27.17ms, maximum = 338.73ms, average = 115.90ms
+--------------------+------+-----------+--------+--------------+---------+----------+----------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+----------+----------+
| blog.zhuohua.store | 22 | 10 | 0 | 100.00% | 27.17ms | 338.73ms | 115.90ms |
+--------------------+------+-----------+--------+--------------+---------+----------+----------+
目标主机'47.75.39.177'的TCP 21端口的Ping结果：
[WinError 10061] 由于目标计算机积极拒绝，无法连接。
检测时间： 20211210_205632
目标主机'blog.zhuohua.store'的TCP 80端口的Ping结果：
Connected to blog.zhuohua.store[:80]: seq=1 time=78.45 ms
Connected to blog.zhuohua.store[:80]: seq=2 time=29.68 ms
Connected to blog.zhuohua.store[:80]: seq=3 time=30.57 ms
Connected to blog.zhuohua.store[:80]: seq=4 time=30.33 ms
Connected to blog.zhuohua.store[:80]: seq=5 time=26.13 ms
Connected to blog.zhuohua.store[:80]: seq=6 time=61.54 ms
Connected to blog.zhuohua.store[:80]: seq=7 time=126.70 ms
Connected to blog.zhuohua.store[:80]: seq=8 time=30.12 ms
Connected to blog.zhuohua.store[:80]: seq=9 time=32.95 ms
Connected to blog.zhuohua.store[:80]: seq=10 time=184.76 ms
Statistics(host='blog.zhuohua.store', port=80, successed=10, failed=0, success_rate='100.00%', minimum='26.13ms', maximum='184.76ms', average='63.12ms')
--- blog.zhuohua.store[:80] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 26.13ms, maximum = 184.76ms, average = 63.12ms
+--------------------+------+-----------+--------+--------------+---------+----------+---------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+----------+---------+
| blog.zhuohua.store | 80 | 10 | 0 | 100.00% | 26.13ms | 184.76ms | 63.12ms |
+--------------------+------+-----------+--------+--------------+---------+----------+---------+
目标主机'blog.zhuohua.store'的TCP 22端口的Ping结果：
Connected to blog.zhuohua.store[:22]: seq=1 time=26.45 ms
Connected to blog.zhuohua.store[:22]: seq=2 time=27.70 ms
Connected to blog.zhuohua.store[:22]: seq=3 time=15.40 ms
Connected to blog.zhuohua.store[:22]: seq=4 time=29.67 ms
Connected to blog.zhuohua.store[:22]: seq=5 time=67.55 ms
Connected to blog.zhuohua.store[:22]: seq=6 time=26.01 ms
Connected to blog.zhuohua.store[:22]: seq=7 time=28.96 ms
Connected to blog.zhuohua.store[:22]: seq=8 time=24.95 ms
Connected to blog.zhuohua.store[:22]: seq=9 time=30.26 ms
Connected to blog.zhuohua.store[:22]: seq=10 time=60.42 ms
Statistics(host='blog.zhuohua.store', port=22, successed=10, failed=0, success_rate='100.00%', minimum='15.40ms', maximum='67.55ms', average='33.74ms')
--- blog.zhuohua.store[:22] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 15.40ms, maximum = 67.55ms, average = 33.74ms
+--------------------+------+-----------+--------+--------------+---------+---------+---------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+---------+---------+
| blog.zhuohua.store | 22 | 10 | 0 | 100.00% | 15.40ms | 67.55ms | 33.74ms |
+--------------------+------+-----------+--------+--------------+---------+---------+---------+
目标主机'47.75.39.177'的TCP 21端口的Ping结果：
[WinError 10061] 由于目标计算机积极拒绝，无法连接。
检测时间： 20211210_210132
目标主机'blog.zhuohua.store'的TCP 80端口的Ping结果：
Connected to blog.zhuohua.store[:80]: seq=1 time=64.66 ms
Connected to blog.zhuohua.store[:80]: seq=2 time=27.90 ms
Connected to blog.zhuohua.store[:80]: seq=3 time=24.36 ms
Connected to blog.zhuohua.store[:80]: seq=4 time=17.65 ms
Connected to blog.zhuohua.store[:80]: seq=5 time=57.18 ms
Connected to blog.zhuohua.store[:80]: seq=6 time=29.24 ms
Connected to blog.zhuohua.store[:80]: seq=7 time=28.03 ms
Connected to blog.zhuohua.store[:80]: seq=8 time=16.56 ms
Connected to blog.zhuohua.store[:80]: seq=9 time=26.74 ms
Connected to blog.zhuohua.store[:80]: seq=10 time=59.94 ms
Statistics(host='blog.zhuohua.store', port=80, successed=10, failed=0, success_rate='100.00%', minimum='16.56ms', maximum='64.66ms', average='35.23ms')
--- blog.zhuohua.store[:80] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 16.56ms, maximum = 64.66ms, average = 35.23ms
+--------------------+------+-----------+--------+--------------+---------+---------+---------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+---------+---------+
| blog.zhuohua.store | 80 | 10 | 0 | 100.00% | 16.56ms | 64.66ms | 35.23ms |
+--------------------+------+-----------+--------+--------------+---------+---------+---------+
目标主机'blog.zhuohua.store'的TCP 22端口的Ping结果：
Connected to blog.zhuohua.store[:22]: seq=1 time=30.87 ms
Connected to blog.zhuohua.store[:22]: seq=2 time=21.36 ms
Connected to blog.zhuohua.store[:22]: seq=3 time=32.03 ms
Connected to blog.zhuohua.store[:22]: seq=4 time=33.00 ms
Connected to blog.zhuohua.store[:22]: seq=5 time=58.27 ms
Connected to blog.zhuohua.store[:22]: seq=6 time=27.53 ms
Connected to blog.zhuohua.store[:22]: seq=7 time=27.92 ms
Connected to blog.zhuohua.store[:22]: seq=8 time=13.95 ms
Connected to blog.zhuohua.store[:22]: seq=9 time=28.02 ms
Connected to blog.zhuohua.store[:22]: seq=10 time=51.57 ms
Statistics(host='blog.zhuohua.store', port=22, successed=10, failed=0, success_rate='100.00%', minimum='13.95ms', maximum='58.27ms', average='32.45ms')
--- blog.zhuohua.store[:22] tcping statistics ---
10 connections, 10 successed, 0 failed, 100.00% success rate
minimum = 13.95ms, maximum = 58.27ms, average = 32.45ms
+--------------------+------+-----------+--------+--------------+---------+---------+---------+
| Host | Port | Successed | Failed | Success Rate | Minimum | Maximum | Average |
+--------------------+------+-----------+--------+--------------+---------+---------+---------+
| blog.zhuohua.store | 22 | 10 | 0 | 100.00% | 13.95ms | 58.27ms | 32.45ms |
+--------------------+------+-----------+--------+--------------+---------+---------+---------+
目标主机'47.75.39.177'的TCP 21端口的Ping结果：
[WinError 10061] 由于目标计算机积极拒绝，无法连接。
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