my paramiko class

#!/usr/bin/evn python
# coding:utf-8
import paramiko,os

class ParamikoTools(object):

    def __init__(self,ip, port, user, password, key, timeout):
        self.host = ip
        self.port = port
        self.user = user
        self.password = password
        self .key = key
        self.timeout = timeout

    def sshs(self,cmd):
        try:
            ssh = paramiko.SSHClient()
            ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
            ssh.connect(hostname=self.host,port=self.port,username=self.user,password=self.password,timeout=self.timeout)
            stdin, stdout, stderr = ssh.exec_command(cmd)
            return stdout.read()
            ssh.close()
        except Exception,e:
            print "%s exec command except:%s"%(self.host,e)

    def sshkey(self,key,cmd):
        try:
            k = paramiko.RSAKey.from_private_key_file(key)
            c = paramiko.SSHClient()
            c.set_missing_host_key_policy(paramiko.AutoAddPolicy())
            c.connect(hostname=self.host, username=self.user, pkey=k,timeout=self.timeout)
            stdin, stdout, stderr = c.exec_command(cmd)
            return stdout.read()
            c.close()
        except Exception,e:
            print "%s exec command except:%s" &(self.host,e)

    def getRemoteFiles(self, localfile, remotefile):
        try:
            # ssh = paramiko.SSHClient()
            # ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
            # ssh.connect(hostname=self.host, port=self.port, username=self.user, password=self.password,
            #             timeout=self.timeout)
            transport = paramiko.Transport((self.host,self.port))
            transport.connect(username=self.user,password=self.password)
            sftp = paramiko.SFTPClient.from_transport(transport)
            sftp.get(remotefile, localfile)
            print "Transport file fished !"
            transport.close()
        except Exception,e:
            print "Get file from %s to local %s,%s"%(remotefile, localfile, e)

    def putLocalToRemote(self, localfile, remotefile):
        try:
            transport = paramiko.Transport((self.host,self.port))
            transport.connect(username=self.user,password=self.password)
            sftp = paramiko.SFTPClient.from_transport(transport)
            sftp.put(localfile, remotefile)
            print "Transport file fished !"
        except Exception,e:
            print "Put local file to remote host execpt, localfile:%s-- remotedir:%s--except:%s" %(localfile, remotefile, e)