from ftplib import FTP
from os import remove

host = ""
port = 25
username = ""
password = ""
name_file = "command.txt"

ftp = FTP(host)
ftp.login(username, password)

with open(name_file, w) as f:
    f.write("start")

ftp.delete(name_file)
file = open(name_file,'rb')
ftp.storbinary('STOR command.txt', file)
file.close()
remove(name_file)