在 Python 中 Ping

Question

我开始学习 python 所以我尝试制作一个需要 host.txt 的程序并且对于 host.txt 的每一行尝试 ping，最后显示所有好的 answers.But 问题是它在 host.txt 的最后一行工作正常并且它说其他人无法访问（比如 google.com）但是如果你把它们放在最后一行它工作 fine.What 应该我做？我的代码：

import platform    # For getting the operating system name
import subprocess  # For executing a shell command

ip_addresses = []
i = 1
j = 1.0
z = 1.0
alive_addresses = []

f = open("host.txt", "r")
for x in f:                                                                     
    ip_addresses.append(x)
    i += 1
         
    
#readfile()


def ping(host,i,j,z):
    """
    Returns True if host (str) responds to a ping request.
    Remember that a host may not respond to a ping (ICMP) request even if the host name is valid.
    """

    # Option for the number of packets as a function of
    param = '-n' if platform.system().lower()=='windows' else '-c'

    # Building the command. Ex: "ping -c 1 google.com"
    command = ['ping', param, '10', host]
    result = subprocess.call(command)
    if result == 0:
        print("%s is Alive ===> %s" %(host,z) + '%')
        alive_addresses.append(host)

    
    else:
        print("%s is Dead ===> %s" %(host,z) + '%')
    
    
for x in ip_addresses:
    try:
        ping(x,i,j,z)
        j += 1
        z = round((j/i), 1) * 100
    except ZeroDivisionError:
        z = 0

print("")
print("")
for x in alive_addresses:
    print("%s is Alive" %(x))

Answer 1

尝试用 command = ['ping', param, '10', host.strip()] 替换 command = ['ping', param, '10', host]，根据我的测试，您的地址末尾有无效字符（换行符），子进程不会像 shell/CMD 那样忽略那些

正在插入

print("DBG: '"+host+"' / '"+host.strip()+"'})")

版画

DBG: '1.1.1.1
' / '1.1.1.1'})

显示换行符。

在处理开头和结尾的空格不重要的行时，通常应始终 strip/trim 字符串。

在 Python 中 Ping

Pinging in Python

python-3.x

ping