import paramiko, sys, os,time

host = 'ftp address'
port = 22
transport = paramiko.Transport((host, port))
password = "pass"                   #hard-coded
username = "user"                   #hard-coded
transport.connect(username = username, password = password)


sftp = paramiko.SFTPClient.from_transport(transport)
print 'SFTP Client initiated'

remotepath = "/remote folder/"
localpath = '/local folder/'

for file in sftp.listdir('.'):
    fullpath   = os.path.join('.',file)
    timestamp  = os.stat(fullpath).st_ctime # get timestamp of file
    createtime = datetime.datetime.fromtimestamp(timestamp)
    now = datetime.datetime.now()
    delta = now -createtime
    if delta.hours > 2:
        sftp.get(file,localpath)
        sftp.remove(file)

sftp.close()
transport.close()

timestamp  = sftp.stat(fullpath).st_atime  # get timestamp of file in epoch seconds
createtime = datetime.datetime.now()
now        = time.mktime(createtime.timetuple())
datetime.timedelta = now - timestamp

if datetime.timedelta> x:
    do something

remotepath = '.'
for file in sftp.listdir_attr(remotepath):
    filepath = remotepath + '/' + file.filename
    timestamp = file.st_mtime
    createtime = datetime.datetime.fromtimestamp(timestamp)
    now = datetime.datetime.now()
    delta = now -createtime
    if delta.hours > 2:
        sftp.get(filepath, localpath)
        sftp.remove(filepath)