## Getiting Start with Flask
### install flask
to run the back end, firstly you should install the flask on your computer , open the commender and input pip instal flask and it will download quickly 
### setting the environment 
seconly make should you have the venv and if no this your falsk app can not run smoothly 
### add the requirenment documents 
create a requienment.txt add Flask==0.12.3click==6.7gunicorn==19.7.1itsdangerous==0.24Jinja2==2.9.6MarkupSafe==1.0pytz==2017.2requests==2.13.0Werkzeug==0.12.1 
### create main file
finaly the last line  app.run(debug=True,host='0.0.0.0',port=80) you can set the port and host as you wish