Python

Resources

• Official Tutorial
• Udacity Courses

Language

Python, named after the British comedy group Monty Python, is a high-level, interpreted, interactive, and object-oriented programming language.

Comment

# ... till end of line

__main__

The __name__ variable (two underscores before and after) is a special Python variable. It gets its value depending on how we execute the containing script. When you run your script, the __name__ variable equals __main__. When you import the containing script, it will contain the name of the script.

Frameworks

Flask

Flask is a micro web framework written in Python. Flask is using a template engine called Jinja.

To enable to run a flask application as a 'normal' python app with

python <FILE>

add to end of file

if __name__ == '__main__':
 app.run()

in Powershell

$env:FLASK_ENV = "development"

Flask Migration

flask db init // creates migrations folder structure
flask db migrate // check the current and the former model in DB and creates versions in migrations folder
flask db upgrade
flask db downgrade

Operation

Comannd Line

python -V // prints version
python
>>> <COMMAND>

Installation

• see EDT Win10 Laptop