Django installation tutorial: detailed steps and commands to install django

Django is a web application framework written in Python that helps developers build high-quality web applications in a faster and easier way. The many features and tools in Django make it one of the most popular and used web frameworks. Although Django has a rich documentation library and community support, installing Django can be a bit challenging for beginners. This article aims to provide a clear and specific Django installation tutorial so that novices can start using Django for web application development as soon as possible.

Step One: Install Python

Django is based on Python, so the first step is to make sure Python is installed on your computer. For best results, it is recommended to install the latest version of Python. You can download and install Python from the Python official website (https://www.python.org/downloads/). The installation wizard provides simple steps to help you complete the installation process.

Step 2: Install Django

After completing the installation of Python, the next step is to install Django. Before installing Django, it is recommended to create a virtual environment on your local computer. With virtual environments, you can create independent Python environments on your local computer, thus avoiding version conflicts between different versions of Python. You can use the following command to install the virtual environment:

pip install virtualenv

Next, you can create a virtual environment named "myenv" on your computer and use the following command:

virtualenv myenv

After completing the creation of the virtual environment, You can activate it as follows:

source myenv/bin/activate

Now, once you are in the virtual environment, you can install Django using the following command:

pip install django

This will install the latest version of Django. If you want to install a specific version, you can use the following command:

pip install django==2.1.5

This will install Django version 2.1.5. After the installation is complete, you can use the following command to verify that Django has been installed correctly:

python -m django --version

This will display the currently installed Django version.

Step 3: Create a Django project

After installing Django, the next step is to create a Django project. The project directory can be created anywhere, but for convenience it is recommended to create a dedicated directory outside the virtual environment directory. In order to create a Django project named "myproject", run the following command on the command line:

django-admin startproject myproject

This will create a Django project named "myproject" in the current directory. This command will create a file named "manage.py" in the project root directory, which is a Django command line tool for managing Django projects.

Next, you can enter the project directory and start the Django development server. Run the following command:

cd myproject
python manage.py runserver

This will start the Django development server. By default the server address is http://127.0.0.1:8000/. The default page of a Django application can be accessed by entering this address in a web browser. If all goes well, you should be able to see the "Welcome to Django" message.

Step 4: Create a Django application

Although the Django project has been created, it is still an empty project without any application functionality. Django applications are modules or applications that provide specific functionality. Therefore, you need to create one or more Django applications to implement your web application.

In order to create a Django application named "myapp", please run the following command in the Django project directory:

python manage.py startapp myapp

This command will create a directory containing the specified application name and provide some template files. Now, you can edit the application's views.py file (located in the myapp directory) to define the logic of the web application.

from django.http import HttpResponse

def index(request):
    return HttpResponse("Hello, World! This is my first Django app.")

Next, link the url pattern with the view function. This can be achieved by defining the URL pattern in the urls.py file in the myproject directory. Please edit the file to add the following lines of code:

from django.conf.urls import url
from django.contrib import admin
from myapp.views import index

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^$', index),
]

Now you have successfully created a simple Django application and linked it with a web application using url patterns.

Conclusion:

In this article, we have provided a detailed Django installation tutorial so that you can quickly start using Django for web application development. We detail installation steps and common commands, and provide practical code examples. While this is just the basics of Django, it gives you a good start in learning Django.

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