python用paramiko模块默认中只可以上传文件，在网上也没有找到合适的直接上传目录的方法，所以用os.walk方法和paramiko结合写了一个上传目录的方法，代码如下：

#!/usr/bin/env pythonimport paramiko,datetime,oshostname='192.168.1.100'username='root'password='123456'port=22def upload(local_dir,remote_dir):    try:        t=paramiko.Transport((hostname,port))        t.connect(username=username,password=password)        sftp=paramiko.SFTPClient.from_transport(t)        print 'upload file start %s ' % datetime.datetime.now()        for root,dirs,files in os.walk(local_dir):            for filespath in files:                local_file = os.path.join(root,filespath)                a = local_file.replace(local_dir,'')                remote_file = os.path.join(remote_dir,a)                try:                    sftp.put(local_file,remote_file)                except Exception,e:                    sftp.mkdir(os.path.split(remote_file)[0])                    sftp.put(local_file,remote_file)                print "upload %s to remote %s" % (local_file,remote_file)            for name in dirs:                local_path = os.path.join(root,name)                a = local_path.replace(local_dir,'')                remote_path = os.path.join(remote_dir,a)                try:                    sftp.mkdir(remote_path)                    print "mkdir path %s" % remote_path                except Exception,e:                    print e        print 'upload file success %s ' % datetime.datetime.now()        t.close()    except Exception,e:        print eif __name__=='__main__':    local_dir='/home/soft/'    remote_dir='/tmp/aaa/'    upload(local_dir,remote_dir)

   经过多次测试，完美实现。