Python 用于 ping a.txt 文件中指定主机列表的脚本

Question

我正在编写一个脚本，该脚本允许我 ping 多个主机以检查它们的状态。 目前我在运行以下我在网上找到的脚本时遇到了 2 个错误。 我更像是一名网络工程师而不是程序员。 我刚刚开始学习 python 但基础知识并不能帮助我解决这个问题。 在此先感谢您的帮助

回溯（最近一次通话最后）：文件“/Users/p.petryszen/Documents/VsCode/Scripts/ping_hosts/ping_hosts.py”，第 45 行，待处理 = Queue.Queue() AttributeError: type object 'Queue' has no属性“队列”

回溯（最近一次通话最后）：文件“/Users/p.petryszen/Documents/VsCode/Scripts/ping_hosts/ping_hosts.py”，第 45 行，待处理 = Queue.Queue() AttributeError: type object 'Queue' has no属性“队列”

import sys
import os
import platform
import subprocess
from queue import Queue 
import threading

def worker_func(pingArgs, pending, done):
    try:
        while True:
            # Get the next address to ping.
            address = pending.get_nowait()

            ping = subprocess.Popen(ping_args + [address],
                stdout = subprocess.PIPE,
                stderr = subprocess.PIPE
            )
            out, error = ping.communicate()

            # Output the result to the 'done' queue.
            done.put((out, error))
    except Queue.Empty:
        # No more addresses.
        pass
    finally:
        # Tell the main thread that a worker is about to terminate.
        done.put(None)

# The number of workers.
NUM_WORKERS = 4

plat = platform.system()
scriptDir = sys.path[0]
hosts = os.path.join(scriptDir, 'hosts.txt')

# The arguments for the 'ping', excluding the address.
if plat == "Windows":
    pingArgs = ["ping", "-n", "1", "-l", "1", "-w", "100"]
elif plat == "Linux":
    pingArgs = ["ping", "-c", "1", "-l", "1", "-s", "1", "-W", "1"]
else:
    raise ValueError("Unknown platform")

# The queue of addresses to ping.
pending = Queue.Queue()

# The queue of results.
done = Queue.Queue()

# Create all the workers.
workers = []
for _ in range(NUM_WORKERS):
    workers.append(threading.Thread(target=worker_func, args=(pingArgs, pending, done)))

# Put all the addresses into the 'pending' queue.
with open(hosts, "r") as hostsFile:
    for line in hostsFile:
        pending.put(line.strip())

# Start all the workers.
for w in workers:
    w.daemon = True
    w.start()

# Print out the results as they arrive.
numTerminated = 0
while numTerminated < NUM_WORKERS:
    result = done.get()
    if result is None:
        # A worker is about to terminate.
        numTerminated += 1
    else:
        print(result[0]) # out
        print(result[1]) # error

# Wait for all the workers to terminate.
for w in workers:
    w.join()

Answer 1

使用from queue import Queue您只在脚本中导入了 object 队列，因此如果您想创建一个队列的新实例，您可以直接使用Queue() ，这意味着您将拥有：

from queue import Queue

# The queue of addresses to ping.
pending = Queue()

# The queue of results.
done = Queue()

如果您将模块队列作为一个整体导入，则需要指定 object 队列的来源

import queue
# The queue of addresses to ping.
pending = queue.Queue()

# The queue of results.
done = queue.Queue()

有关模块中的更多参考：

• https://docs.python.org/3/tutorial/modules.html
• https://docs.python.org/3/reference/import.html