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...
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.
Although using loops when writing Python code isn’t necessarily a bad design pattern, using extraneous loops can be inefficient and costly. Let’s explore some tools that can help us eliminate the…
Next, we define a variable file_path containing a string that represents the full path to a file. The path includes both the directory structure (/home/user/documents) and the file name (report.txt).The crucial part of this script is the line where we call os.path.dirname(file_path)....
Easy to learn. Python’s readability makes it relatively easy for beginners to pick up the language and understand what the code is doing. Versatility. Python is not limited to one type of task; you can use it in many fields. Whether you're interested in web development, automating tasks,...
“Should I learn Python?” is a question met with a resounding “Yes,” and here are some key reasons why you should learn Python vs Node.js programming in 2022. Learning Python will keep you relevant Learning how to code will keep you in demand as the workforce evolves. Jobs in softwar...
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...
You can use theshutil.move()method to move a file in Python. The following code snippet shows how to move the file namedexample.txtto a new location namednew_folder. import shutil shutil.move("example.txt", "/path/to/new_folder/example.txt") ...
MATLAB has two ways to define a class. With the first way, you can put all of the class definition in a single file with the name of the class as the filename. Then within the file, you can use the classdef keyword to define the properties and methods that belong to the class. Wi...
Define the function that fetches the account information. It’s always a good idea to name a function after what it does: This one gets account information, so we’ll call itget_account_info: do_get_account.py ...defget_account_info():api_url='{0}account'.format(api_url_base)respons...