When we are developing a large Python program, it is a good practice to place all the user-defined exceptions that our program raises in a separate file. Many standard modules define their exceptions separately asexceptions.pyorerrors.py(generally but not always). Example: Python User-Defined E...
While building a Python application with a graphical user interface, I often need to display data clean and organized. The tables are perfect for this. However, when I started with Tkinter, I wasn’t sure how to create tables. After some research and experimentation, I discovered that the Tr...
Let’s get into a practical example to understand how to create a basic text box in Python Tkinter. Suppose you’re developing an application for a US-based company that requires employees to enter their name and a brief introduction. Here’s how you can create a text box to capture this...
In this tutorial, you'll learn how to remove or replace a string or substring. You'll go from the basic string method .replace() all the way up to a multi-layer regex pattern using the sub() function from Python's re module.
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This is a security feature: It allows you to host Python code for many template libraries on a single host machine without enabling access to all of them for every Django installation. There’s no limit on how many modules you put in the templatetags package. Just keep in mind that a {...
It’s important to realize that a Django field class is not what is stored in your model attributes. The model attributes contain normal Python objects. The field classes you define in a model are actually stored in theMetaclass when the model class is created (the precise details of how th...
How to Define a Function: User-Defined Functions (UDFs) The four steps to defining a function in Python are the following: Use the keyword def to declare the function and follow this up with the function name. Add parameters to the function: they should be within the parentheses of the fu...
Classes are like a blueprint or a prototype that you can define to use to create objects. We define classes by using theclasskeyword, similar to how wedefine functionsby using thedefkeyword. Info:To follow along with the example code in this tutorial, open a Python interactive shell on ...
Define column D as Series Value. Click on OK. In the Select Data Source dialog box, click on the Edit option from the Horizontal Axis Labels. In the Axis Labels dialog box, select column B as the Axis label range. Click on OK. Click on OK in the Select Data Source dialog box. The...