pip install virtualenv
virtualenv env
.\env\Scripts\activate.ps1
pip install flask
 pip install flask-sqlalchemy (for database)

import the database in python

>>python (enter) in virtual envirment 
>>pip install flask flask_sqlalchemy
>> in main.py
 Set DB path to SQLite file
>>BASE_DIR = os.path.abspath(os.path.dirname(__file__))
>>DB_PATH = os.path.join(BASE_DIR, 'todo.db')  # You can change the file name

create_db.py

from app import app, db

with app.app_context(): db.create_all() print("✅ SQLite DB created: todo.db")

>> Runto crate DB
>python create_db.py

sqlite viewer

drag and drop the sql file in the sqlite viewer to show the all data .

open the sqlalchemy doc

development HEROKU

>>go to HERoku and create the account.
>>install the hero cli
>>in project install
>>pip install guicorn
>>pip freeze > requirements.txt
>> create the Procfile

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