python.and.its.frameworks.md

$$\color{purple}{Python \ And \ Its \ Framworks \ Installations}$$ 🔗Home

Topics:

1. How To Install Python 3 and Set Up a Programming Environment on an Ubuntu 20.04 Server
   
2. How to Install virtualenv on Ubuntu 20.04 LTS (Focal Fossa)
   
3. How To Install the Django Web Framework on Ubuntu 20.04
   
4. How To Install the Flask Web Framework on Ubuntu 20.04
   

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How To Install Python 3 and Set Up a Programming Environment on an Ubuntu 20.04 Server

Setting Up Python 3:

 sudo apt update
 sudo apt -y upgrade
 python3 -V

 sudo apt install -y python3-pip
 pip3 install package_name
 sudo apt install -y build-essential libssl-dev libffi-dev python3-dev

Setting Up a Virtual Environment:

  sudo apt install -y python3-venv
  mkdir environments
  cd environments
  python3 -m venv my_env
  ls my_env
  source source my_env/bin/activate
  (my_env) ajay@sisaudiya:~/environment$

Creating a “Hello, World” Program:

   (my_env) ajay@sisaudiya:~/environment$ nano hello.py

hello.py

    print("Hello, World!")
    (my_env) ajay@sisaudiya:~/environment$python hello.py

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How to Install virtualenv on Ubuntu 20.04 LTS (Focal Fossa)

Update Your Server:

    sudo apt update
    sudo apt upgrade

Install pip3:

     sudo apt install python3-pip

Install virtualenv:

      pip3 install virtualenv

Check Version:

   virtualenv --version

Create a Virtual environment:

    virtualenv venv

Activate or Deactivate environment:

     ajay@sisaudiya:~$ source venv/bin/activate
     (venv) ajay@sisaudiya:~$

     (venv) ajay@sisaudiya:~$ deactivate
     ajay@sisaudiya:~$

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Install Django App On Ubuntu 20.04

 Installed Python: 

     python -v

  Django: 

   sudo apt install python3-django
   django-admin --version

Install with pip in a Virtual Environment:

    sudo apt update
    python3 -V
    sudo apt install python3-pip python3-venv
    mkdir ~/newproject
    cd ~/newproject
    python3 -m venv my_env
    source my_env/bin/activate
    (my_env) ajay@sisaudiya:~/myapp$ pip install django
    (my_env) ajay@sisaudiya:~/myapp$ django-admin --version
    (my_env) ajay@sisaudiya:~/myapp$ deactivate
    cd ~/newproject
    source my_env/bin/activate

Development Version Install with Git:

   sudo apt update
   python3 -V

   sudo apt install python3-pip python3-venv
   git clone git://github.com/django/django ~/django-dev
   cd ~/django-dev
   python3 -m venv my_env
   source my_env/bin/activate
   (my_env)$ pip install -e ~/django-dev
   django-admin --version

Creating a Sample Project:

    mkdir ~/django-test
    cd ~/django-test 
    python3 -m venv my_env
    source my_env/bin/activate
    (my_env)$ pip install django
    (my_env)$ django-admin startproject djangoproject .
    (my_env)$ python manage.py migrate       
    (my_env)$ python manage.py createsuperuser

Modifying ALLOWED_HOSTS in the Django Settings:

(my_env)$ nano ~/django-test/djangoproject/settings.py

~/django-test/djangoproject/settings.py

ALLOWED_HOSTS = ['your_server_ip_or_domain', 'your_second_ip_or_domain', . . .]

Testing the Development Server:

(my_env)$ sudo ufw allow 8000
(my_env)$ python manage.py runserver your_server_ip:8000
http://your_server_ip:8000

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