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Tutorial 1: Introduction
=============================
[Demonstration time: 6 mins (0.751 ~ 75%) | Total time: 8 mins 41 s]
-------------
Slide 1 [00:08 | 00:08]
-------------
**Introduction to Django**
Slide 2 [00:09 | 00:17]
--------------
**Learning Objectives**
In this tutorial, we will learn:
- What is Django?
- How to use a virtual environment
- How to install Django
Slide 3 [00:11 | 00:28]
---------------
**System Requirements**
- Ubuntu 16.10
- Python 3.5 or higher version
- python3.4-venv (Install using *apt-get install python3.4-venv*)
Slide 4 [00:12 | 00:40]
---------------
**Pre-requisites**
In order to follow this tutorial, you need;
- to know Python
- to know Object Oriented Programming
- If not, see the tutorials on http://spoken-tutorial.org
Slide 5 [00:10 | 00:50]
----------------
**What is Django**
- Free and open source
- Web application framework
- Written in Python
- Very popular
[Image of Django logo]
Slide 6 [00:13 | 01:03]
-------------------
**Why Django**
- easy to start
- rapid development
- has a lot of pre-built features
- supports various database backends
- supports multilingual websites
- provides a user interface for administrative activities
Slide 7 [00:06 | 01:09]
--------------
**Where is Django used**
- Pinterest - A social image and web resource sharing site
- [Add Screenshot]
Slide 8 [00:03 | 01:12]
--------------
**Where is Django used**
- Instagram - A social photo sharing site
- [Add Screenshot]
Slide 9 [00:03 | 01:15]
--------------
**Where is Django used**
- Disqus - A commenting system that can be integrated on any web page
- [Add Screenshot]
Slide 10 [00:12 | 01:27]
---------------
**What is a virtual environment**
- Create 'isolated' environment
- Does not require root access
- Install Python packages from PyPI
Demonstration [02:00 | 03:27]
----------------
**Working with virtual environments**
- Creating a virtual environment in Python 3
- *python3 -m venv myapp_env*
- Activate the environment
- *source myapp_env/bin/activate*
- Shell prompt will be *(myapp_env)user1:~$*
- Deactivate the environment
- deactivate
Demonstration [02:00 | 05:27]
---------------
**Install Django**
- Let us reactivate the virtual environment
- *source myapp_env/bin/activate*
- Check if django is installed using;
- Command: *python -m django --version*
- If not installed then we see "No module named django"
- pip install django
- Again we check and now we see the django version
- We can also update the django version in future
- pip install -U django
- For more help:
- pip --help or pip <command> --help
Demonstration [ 02:30 | 07:57]
---------------
- Now we will run few commands to see how django works.
- We will learn about them in later tutorials.
- Type the following command:
- django-admin.py startproject demo-project
- This creates a project directory with all the necessary files.
- cd demo-project
- Now run:
- python manage.py runserver
- This may give migrations warning at the start, we ignore them for now.
- We see that the server is running now.
- Go to the address shown, mostly will be http://127.0.0.1:8000/
- So in a web browser we see the django index page.
- Go back to the terminal.
- We can quit the server with CONTROL-C
- You can also delete the virtual environment by deleting it's directory
- *rm -rf myapp_env*
Slide 11 [00:12 | 08:09]
---------------
** Assignment **
- Create a new virtual environment.
- Activate it.
- Install other version of django
** Followed by standard concluding slides ** [00:30 | 08:39]
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