added env line

export.py

+#!/usr/bin/env python3
 # to run this script and export the database from an docker container run docker -it <container_name> python3 export.py > database.csv
 #The output will be in excel-style CSV (";" instead of "," as column seperator.)
 

import.py

+#!/usr/bin/env python3
 #To import data you need a excel style CSV (";" as seperator) with the first as short url (e.g. kurz.ml/example) and in the seccond row the long url (e.g http://example.com).
 #Then run docker -it <container_name> python3 import.py Now you can paste the CSV as text and press enter again at the end
 import sqlite3
 import os
+from tqdm import tqdm
 def table_check(): #Check if database exists
     create_table = """
         CREATE TABLE WEB_URL(
@@ -30,13 +32,10 @@ with sqlite3.connect('db/urls.db') as conn:
             break
     text = lines
     entries = len(text) #Count the entries (for the output in the for loop)
-    counter = 1
-    for lines in text:
-        print("Importing " + str(counter) + " from " + str(entries)) #Make a progress message (mormaly unnecessary, because import is to quick (<1s))
+    for lines in tqdm(text):
         SHORT_URL = lines.split(";")[0].replace("\n", "").replace("\r","") #Split the CSV at the ";" then use the first one and replace all linebreaks
         LONG_URL = lines.split(";")[1].replace("\n", "").replace("\r","") #Split the CSV at the ";" then use the seccond one and replace all linebreaks
         res = cursor.execute( #Insert the data in the SQL table
             'INSERT INTO WEB_URL (LONG_URL, SHORT_URL) VALUES (?, ?)',
             [LONG_URL, SHORT_URL.lower()]
-        )
-        counter = counter + 1 #Add 1 to counter, for progress
\ No newline at end of file
+        )
\ No newline at end of file

main.py

+#!/usr/bin/env python3
 from waitress import serve
 from flask import Flask, request, render_template, redirect, abort, Markup
 import sqlite3