Basics of Flask to start with

1. FLASK- BASICS

2. Whatwillwedo inthissession?
1. Understand
about Flask
2. Why can it be
used over other
tech stacks like
springboot, Nodejs.
3. Installing Flask
in Linux or
Windows.
4. Executing a
basic program to
understand the
working of Flask.
5. Understanding
REST APIs in
Flask with a demo
project.
6. Understanding
the working of
Microservices with
a project.

3. What isFlask?
 Flask is a micro web application framework written in
python .
 It basically uses Werkzeug toolkit and jinja2 template to
run a web application.
 Werkzeug toolkit: It is a WSGI toolkit
which implements requests, response objects and utility
functions and this enables building a web framework on
top of it.
 Jinja2 : It is one of the popular templating engine for
python. A web templating system combines a template
with certain data source to render dynamic web pages.

4. WhyisFlaskeasiertoimplementthenthe
othertechstacks?
 As we know that Flask is a Micro Framework it does not
presume or force the developer to use a particular tool or
library.
 The main differentiating factor in Flask is that it has no
database abstraction layer, form validation or any other
pre-existing third party libraries providing common
functions, however Flask supports extension that can
add application features as if they were implemented in
flask.
 Extensions in flask exist for object relational mappers,
form validation, upload handling , various open
authentication technologies and several framework related
tools.

5. Featuresof Flask
It contains
development
server and
debugger.
Integrated
support for Unit
testing.
RESTful request
dispatching.
A lot of extensions
available to
enhance the
desired features.

6. Installation ofFlask
 Installing and activating the virtual Environment:
 python3 -m pip install virtualenv
 python3 -m virtualenv venv
 source venv/bin/activate
 For windows:
 venvScriptsactivate
 Installing Flask inside the virtual Envirorment.
 pip install Flask

7. Quicklywithaproject,Understand
theRESTfulAPIsinFlask

8. Now we will start with a
basic code in Flask.