Update 'Quick Guide to publishing websites on hal.elte.hu with Python3 backend'

Quick-Guide-to-publishing-websites-on-hal.elte.hu-with-Python3-backend.md

@@ -24,7 +24,6 @@ Since Flask’s built-in server is not fit for live traffic, you need another WS
 2. Install **mod_wsgi** compiled with python3: `SUDO APT-GET INSTALL LIBAPACHE2-MOD-WSGI-PY3`
 3. Enable mod_wsgi: `SUDO A2ENMOD WSGI`
 4. Create a config file for your website:
-
 #### Creating `your_app.conf`
 This file contains the paths to all the important Files needed for Apache2 to run your Python3 scripts. The minimal config file for a Flask-app, with static files (Images, CSS) present looks like:
 ```
@@ -67,4 +66,20 @@ Replace `your_app` with the appropriate name of your website and folders. If you
 > |-------------------------main.py  
 > |------------------------- (…)  
 
-7. ASD
+7. Create a wsgi script, that can start your Python app in your virtualenv:
+#### Creating `your_app.wsgi`
+```
+#!/var/www/html/your_app/your_app/venv/bin/python
+import sys
+import logging
+import os
+
+APP_HOME = "/var/www/html/your_app/your_app/"
+sys.path.insert(0,"/var/www/html/your_app/your_app/venv/lib/python3.9/site-packages")
+
+logging.basicConfig(stream=sys.stderr)
+sys.path.insert(0,APP_HOME)
+os.chdir(APP_HOME)
+
+from main import app as application
+```