#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from ftplib import FTP
from os import path
from os.path import expanduser, join


ftp = FTP("ftp_address")
ftp.login("ftp_login", "ftp_password")
ftp.cwd("/ftp/dir")

home_path = '~/Desktop/'


def check_file1():
    """Check file '1.txt' at ftp"""
    ftp_files = []
    for name in ftp.nlst():
        ftp_files.append(name)
    for x in range(len(ftp_files)):
        if '1.txt' in ftp_files[x]:
         return 1
    return 0


def check_file2():
    """Check file '2.txt' at ftp"""
    ftp_files = []
    for name in ftp.nlst():
        ftp_files.append(name)
    for x in range(len(ftp_files)):
        if '2.txt' in ftp_files[x]:
         return 1
    return 0

def create_files():
    """Build txt files to copy ftp"""
    if check_file1() == 1 and check_file2() == 0: #if file '1.txt' exsist and '2.txt' not
        with open (path.join(expanduser(home_path), '2.txt'),'w') as f:
         pass
    if check_file1() == 1 and check_file2() == 1: #both files are created
        for x in range(3,11):
            with open (path.join(expanduser(home_path), str(x) + '.txt'),'w') as f:
             pass


def download_ftp():
    if check_file1() == 1 and check_file2() == 0:
        file = path.join(expanduser(home_path), '2.txt')
        with open(file, 'rb') as text_file:
            ftp.storlines('STOR 2.txt', text_file)
    elif check_file1() == 1 and check_file2() == 1:
        for x in range(3,11):
          file = path.join(expanduser(home_path), str(x) + '.txt')
          name = path.join(str(x) + '.txt')
          with open(file, 'rb') as text_file:
              ftp.storlines('STOR ' + name, text_file)


check_file1()
check_file2()
create_files()
download_ftp()