<p>使用concurrent.futures内置模块。它提供了异步执行任务的高级API</p>
<p><a href="https://docs.python.org/3/library/concurrent.futures.html" rel="nofollow noreferrer">https://docs.python.org/3/library/concurrent.futures.html</a></p>
<p>下面是修改后的代码。希望能有帮助</p>
<pre><code>import time
import concurrent.futures
from netmiko import ConnectHandler
hosts_info = []
with open('routers.txt', 'r') as devices:
for line in devices:
deviceip = line.strip()
host = {
'device_type': 'cisco_ios',
'ip': deviceip,
'username': 'cisco',
'password': 'cisco',
'secret': 'cisco'
}
hosts_info.append(host)
starting_time = time.perf_counter()
def open_connection(host):
try:
connection = ConnectHandler(**host)
print('Trying router', host['ip'])
print('Connection Established to Host:', host['ip'])
connection.enable()
sendcommand = connection.send_command('sh run | i hostname')
return sendcommand
except:
print('Connection Failed to host', host['ip'])
with concurrent.futures.ProcessPoolExecutor() as executor:
results = executor.map(open_connection, hosts_info)
for result in results:
print(result)
finish = time.perf_counter()
print('Time Elapsed:', finish - starting_time)
</code></pre>