from ftplib import FTP

nonpassive = False

filename = 'new_1.py'

dirname = '.'

sitename = '192.168.191.1'                                #连接FTP服务器地址
#如果设置密码
#userinfo = ('username','password')

#如果没有设置帐号密码userinfo = ()

print('Connecting...')

connection = FTP(sitename)

connection.login(*userinfo)

connection.cwd(dirname)

if nonpassive:                                             #force active FTP if server requires

    connection.set_pasv(False)

print('Downloading...')

localfile = open(filename,'wb')

connection.retrbinary('RETR '+filename,localfile.write,1024)

connection.quit()

localfile.close()

print('Finished')