Summary: Since switch-case statements are not a part of Python, you can use one of the following methods to create a switch-case construct in your code : Using a Python Dictionary Creating a Custom Switch Class Using if-elif-else Conditional Statements Using a Lambda Function Problem: Given a selection control switch case scenario in Python; how … Read more
In this article, you’ll learn about two variants of this problem. Assign multiple values to multiple variables Assign the same value to multiple variables Let’s have a quick overview of both in our interactive code shell: Exercise: Increase the number of variables to 3 and create a new one-liner! Let’s dive into the two subtopics … Read more
Summary: To get a cron like scheduler in Python you can use one of the following methods: Use schedule module Use APScheduler Use timeloop library Use CronTab module Cron (also called a cron job) is a software utility that helps a user to schedule tasks in Unix-like systems. The tasks in cron are present in … Read more
Among the ingredients that make a programming language powerful are control flow statements. The Python for loop is one such control flow statement. The if statement is another one. In this tutorial, you’ll learn about both! Python For Loop The world around us is built around repetition. The sun goes up every morning and after … Read more
Summary: To resolve an UnboundLocalError when the local variable is reassigned after the first use, you can either use the global keyword or the nonlocal keyword. The global keyword allows you to modify the values of a global variable from within a function’s local scope while the nonlocal keyword provides similar functionality in case of … Read more
Summary: To import a module given the full path, the following methods can be used : Using the importlib module Using SourceFileLoader class Using sys.path.append() function Adding __init__ file to the folder containing the module and then importing it Problem: How to import a module if its full path has been given? Example: Consider we … Read more
Every Python coder hates semicolons ; to terminate statements. If you’re like me and somebody shows you the following Python code, you’ll start to wonder if the person confused Python with Java or C++. Python Semicolon Example [One-Liner] Here’s how one may use the semicolon: If you run this Python one-liner with semicolons, you’ll get … Read more
You may know the following problem: You have an object’s attribute name as a string—say, you’ve read it from a file—and you want to access the attribute with the given name. But you cannot use the syntax object.”attribute” because the dot notation only allows for name-access like this: object.attribute. How do you resolve this problem? … Read more
Summary: To call an external command in a Python script, use any of the following methods: Whether you are a developer or a system administrator, automation scripts are going to be a common part of your daily routine. These may include automating routine tasks like file backups or health checks. However, maintaining such shell scripts … Read more
Are you ready to take your Python knowledge to the next level? Let’s have a little fun with the inputs. Only instead of having you enter your name, we’ll work with numbers. It’s a nice, simple calculator. You enter in two numbers and it adds them together to give you an answer. Simple, right? Well, … Read more
Article summary: Here’s a quick visual overview of the contents of this tutorial. Flat List: To sum over a list of numbers in a single line of Python code, use Python’s built-in function sum(list). Nested List: To sum over a list of lists in one line Python, use a generator expression to flatten the list … Read more
Python provides fantastic string formatting options, but what if you need greater control over how values are presented? That’s where format specifiers come in. This article starts with a brief overview of the different string formatting approaches. We’ll then dive straight into some examples to whet your appetite for using Python’s Format Specification Mini-Language in … Read more