Example: Python User-Defined Exception # define Python user-defined exceptionsclassInvalidAgeException(Exception):"Raised when the input value is less than 18"pass# you need to guess this numbernumber =18try: input_num = int(input("Enter a number: "))ifinput_num < number:raiseInvalidAgeExcep...
How to make a REST API using Python Flask? This article will guide you through the first steps to create a REST API using Flask(🌶️). Below you can see the endpoints you’ll have by the end of the tutorial. The documentation presented is also generated by the application you...
Nevertheless, you may find yourself needing functionality that is not covered by the core set of template primitives. You can extend the template engine by defining custom tags and filters using Python, and then make them available to your templates using the {% load %} tag....
You may want to know how to build a web crawler. Building a simple web crawler in Python involves several steps, from setting up the development environment to coding the crawler logic. Below is a detailed guide to help you on how to build a web crawler using Python, utilizing the request...
How to Throw an Exception in PythonSometimes you want Python to throw a custom exception for error handling. You can do this by checking a condition and raising the exception, if the condition is True. The raised exception typically warns the user or the calling application....
Python raises exceptions when it encounters errors during execution. APython Exceptionis basically a construct that signals any important event, such as a run-time error. Exception Handling is the process of responding to executions during computations, which often interrupts the usual flow of executin...
Creating custom fields requires a bit of attention to detail. To make things easier to follow, we’ll use a consistent example throughout this document: wrapping a Python object representing the deal of cards in a hand ofBridge. Don’t worry, you don’t have to know how to play Bridge ...
We can define our own custom exception types by inheriting from another exception class, but it's a little bit unusual to do so. Unless you really need to distinguish your exceptions from exceptions that are built into Python, you probably won't create custom exceptions often. ...
How to configure access credentials for OSS SDK for Python,:To initiate a request using the Object Storage Service (OSS) SDK for Python, you must configure access credentials. Alibaba Cloud services use these credentials to verify identity information an
You can choose the default installation or upgrade option, or do a custom install, where you can select the location and what features to install. So, follow the steps, and you should be good to go.How do I create a Python script?While...