Learn to use key commands: Installing Django from scratch

Start from scratch: Master the key commands to install Django, you need specific code examples

In modern web development, Django is a very popular Python web framework . It provides an efficient and concise way to build complex web applications. To start using Django, you first need to install it in your development environment. This article will focus on the key commands required to install Django and provide specific code examples.

1. Determine the installation of Python

First, you need to make sure that Python is installed on your computer. You can check the Python version by opening a terminal window and entering the following command:

python --version

If you have Python installed, you will see output similar to "Python 3.7.4". If it is not installed, you need to go to the official Python website to download and install the latest version of Python.

2. Create a virtual environment

Before installing Django, it is best to create a separate virtual environment for your project. Virtual environments can help you isolate dependencies between different projects. Enter the following command in a terminal window to create a virtual environment:

python -m venv myenv

This will create a virtual environment named myenv in the current directory. Next, you need to activate the virtual environment:

On Windows:

myenvScriptsctivate

On macOS/Linux:

source myenv/bin/activate

Once you activate the virtual environment, you will be in Terminal You will see the (myenv) logo in front of the command prompt.

3. Install Django

Now you can use the pip command to install Django. Enter the following command in the terminal:

pip install django

This will automatically download and install Django and the libraries it depends on. After the installation is complete, you can use the following command to verify the installation of Django:

django-admin --version

If you see output similar to "3.1.2", Django has been successfully installed.

4. Create a Django project

Now you are ready to use Django. With the virtual environment activated, enter the following command to create a Django project:

django-admin startproject myproject

This will create a Django project named myproject in the current directory. You can change the name of the project, replacing myproject with your own preferred name.

5. Run the Django development server

In the project directory, enter the following command to start the Django development server:

cd myproject
python manage.py runserver

This will start a local development server , runs at http://127.0.0.1:8000 by default. You can open this address in your browser and see Django's welcome page.

6. Create a Django application

In Django, a project can contain multiple applications. Each application is an independent module that handles specific functionality. To create a new application, you can enter the following command in the project directory:

python manage.py startapp myapp

This will create a new application named myapp in the project. You can change the name of the application, replacing myapp with your own preferred name.

Now you can edit and add your application code in the myapp directory.

Through the above steps, you have completed the installation and setup of Django. Now you can use the power of Django to build web applications.

Summary:

This article introduces the key commands for installing Django from scratch and provides specific code examples. By following these steps, you can successfully install and configure Django in your development environment and start building efficient, clean web applications. I hope this article will help you learn Django!

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