Python常用模块

1、paramiko自动登录网络设备抓取配置信息

ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(hostname='192.168.1.2', port=22, username='cisco', password='cisco')
client = ssh.invoke_shell()
def run_cmd(cmd, endswith): #形参：cmd命令，结束符
buff = ''
client.send(cmd)
while not buff.endswith(endswith):
resp = str(client.recv(1024), 'utf-8')
buff += resp
return buff
res = ''
res += run_cmd('enable
', 'Password: ')
res += run_cmd('cisco
', '#')
res += run_cmd('terminal length 0
', '#')
res += run_cmd('show run
', '#')
print(res)
ssh.close()

def sshconnect(command,hostname):
    """
    :param command: 格式必需为list
    :param hostname: 单个主机IP地址
    :return: 用户不存在或连接超时返回错误
    """
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    try:
        ssh.connect(hostname=hostname, port=22, username=USERNAME, password=PASSWORD)
    except (NoValidConnectionsError,TimeoutError,AuthenticationException) as e:
        return {'status':False, 'ip': hostname}
    else:
        client = ssh.invoke_shell()
        for i in range(0, len(command)):
            buff = ''
            client.send(command[i] + '
')
            while not buff.endswith('#'):
                resp = str(client.recv(1024), 'utf-8')
                buff += resp
    ssh.close()

https://github.com/tecstack/forward