When you develop a Django app, you always need to change the model fields. But how to make the changes take effect (add/remove table column to/from backend database table ). To a beginner, this question may be confused. This article will tell you how to do it.

In the previous article How To Add Models To Django Admin Site, we have learned how to manage your Django app’s model data in the Django project admin website. But even we implement the model class’s __str__(self) function, we can only display one model class column in the project admin site like the below picture.

Django model class is defined in models.py file in Django application folder, each model class will be mapped to a database table in the project backend database server. After you define the model class, you can create the related table use Django manage.py tasks command, all the low level sql command ( such as table

When we develop Python programs, we always need to install and use a lot of third-party library packages. But if we develop the same Python program on another new machine, we may need to install all those library packages again. This will waste time and even make errors. But PIP has provided a method for

Python unittest library is used to run the unit tests for Python classes and functions. It is a built-in library provided by Python, so you do not need to install any third-party library to use it. This example will demo how to use it to make your unit test more clear and easy. But the

We have shown you how to use bootstrap3 and Django to create a beautiful website in the previous article Django Bootstrap3 Example. But that example does not provide two important features, one is searching and the other is search results pagination. This article will add the two features to it. All the source code is

When I develop a Python application, sometimes I need to access my Gmail account from the Python source code. But this is not allowed by google by default, you need to configure some settings to make it happen. This article will tell you how to make your Gmail account accessed by less secure apps such

The python modulesmtplib provides functions to send emails to an SMTP server. This article will show you how to send plain text, Html content emails using the smtplib module, it also shows how to send emails with attached files and how to embedded images in your email.