download files from disketta

# -*- coding: utf-8 -*-
from wialon.api import Wialon, WialonError
from wialon import flags
import json
import urllib
import time
import datetime
import dateutil.relativedelta
import calendar
import os
import re
from pathlib import Path
import tarfile
import shutil
import unicodedata


fls = []
folders = []
step = 0
try:
    wialon_api = Wialon()
    result = wialon_api.token_login(token='xxxxxxxxxxxxxxxxxxxxx')
    wialon_api.sid = result['eid']

    result = wialon_api.avl_evts()

    print wialon_api.sid
    spec = {
        "itemsType": "avl_unit",
        "propName": "sys_name",
        "propValueMask": "*",
        "sortType": "sys_name"
    }
    
 
    interval = {"from": 0, "to": 0}


    try:
        units = wialon_api.core_search_items(spec=spec, force=1, flags=flags.ITEM_DATAFLAG_BASE, **interval)
        for i in units['items']:
            gen = {
            "itemId": i['id'],
            "storageType": 2,
            "path": "/tachograph",
            "mask": "*",
            "recursive": "false",
            "fullPath": "false"
            }
            itId = i['id']
            getSid = wialon_api.sid
            print i['nm']
            folder = i['nm']
            if not os.path.exists(folder):
                os.makedirs(folder)
                folders.append(folder)
            if os.path.exists(folder):
                files = wialon_api.file_list(**gen)
                for i in files:
                    print i["n"]
                    repl = i["n"]
                    repl = ''.join((c for c in unicodedata.normalize('NFD', repl) if unicodedata.category(c) != 'Mn'))
                    tachofile = Path(folder + "/" + str(repl))
                    caut = folder + "/" + repl 
                    with open("db.txt") as f:
                        found = False
                        for line in f:  
                            if re.search("^{0}$".format(caut),line):    
                                print "File already exists"
                                found = True
                        if not found:
                         
                            print "File doesn't exist, downloading..."
                            for j in range (0,3):
                                try:
                                    print ()
                                    urllib.urlretrieve('https://hst-api.wialon.com/wialon/ajax.html?svc=file/get&params={"itemId":' + str(itId) + ',"storageType":2,"path":"/tachograph/' + str(repl) + '"}&sid=' + getSid, folder + '/' + str(repl))
                                    if tachofile.is_file():
                                        print "Downloaded"
                                        fls.append(folder + "/" + str(repl))
                                except Exception as e:
                                    print(e)
                                    continue
                                break
                            step = 1   
        if step == 1:
            timestr = time.strftime("%Y%m%d-%H%M%S")
            num_arh = timestr + "-tacho.tar.gz"
            tar = tarfile.open(num_arh, "w:gz")
            for g in fls:
                tar.add(g)
                print "Archiving " + g
                with open('db.txt', 'r+') as the_file:
                    gasit = False
                    for line in the_file:  
                        if re.search("^{0}$".format(g),line): 
                            print "already in file db"
                            gasit = True
                    if not gasit:
                        the_file.write(g + '\n')
            tar.close()
            pathArh = Path(num_arh)
            if pathArh.is_file():
                print "Archive " + num_arh + " was created"
                print "Deleting leftovers..."
                for f in fls:
                      os.remove(f)
            else:
                print "Problem creating the archive"

    except WialonError as e:
        print e


    wialon_api.core_logout()
except WialonError as e:
    pass