Flask notes.txt

what is flask?
 flask is a web micro frame work in python.
Armin Ronacher, who leads an international group of Python enthusiasts named pocco, develops it.
Flask is based on Werkzeug WSGI toolkit and Jinja2 template engine.
Both are Pocco projects.

WSGI
----
Web Server Gateway Interface has been adopted as a standard for python web application development.
WSGI is a specification for a universal interface between the web server and web application.

JINJA2
---------
Jinja2 is a popular templating engine for python .
A web templating system combines a template with a certain data source to render dynamic web pages.

A Jinja template is simply a text file. Jinja can generate any text based format (Html,Xml,CSV,Latex,etc). A jinja template doesn't need to have a specific extension: .html, .xml, or anyother extensions is just fine.

Delimeters
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{% ... %}------ statements
{ { .... } }--------Expression
{# ... # }--------comments
{ % extends 'filename.html' %}
{% block content %}
{% end block%}

{ % for i in items % }
{ % end for %}