To check if an object has an attribute in Python, you can use the hasattr() function. This function takes two arguments: the object that you want to check, and the name of the attribute that you are looking for. For example: In this example, hasattr(obj, ‘attr’) will return True, because obj has the attribute attr. […]
Python How to Check If an Object Has an Attribute (hasttr, getattr) Read More »
The easiest way to remove a property from an object in JavaScript is by using the delete operator. For example, if you have an object called person with a property age, you can remove the age like this: After you run this code, the person object will no longer have an age property. Note that
3 Ways to Remove a Property from a JavaScript Object Read More »
In Git, the HEAD is the current state of the branch you’re working in. The HEAD is a pointer that follows you everywhere you go. If you’ve checked out in any git branch and run git show HEAD, it shows the most recent commit. In a sense, the Git HEAD is you. It points to
What Is the HEAD in Git: A Complete Guide (with Examples) Read More »
To remove a non-empty folder in Python, you can use the shutil module, which provides functions for copying and removing files and directories. ATTENTION! This guide shows you how to permanently delete the files and directories. Make sure you’ve crafted the file paths so that you’re 100% sure to delete the directories you want to
Python How to Delete a Non-Empty Folder Read More »
In Python, there’s no tuple comprehension. However, you can mimic the tuple comprehensions by running a generator expression inside tuple() function call. For example: This guide teaches you how to mimic the behavior of tuple comprehensions by using generator expressions inside the tuple() function. You will learn what is a generator expression and how the
Python Tuple Comprehension: Step-by-Step Guide (Examples) Read More »
To split a list into N chunks in Python, you can use iterators: Notice that it isn’t always possible to produce a list where the chunks are equal in length. This is because the list elements might not be evenly divisible to the N chunks. This is a comprehensive guide to splitting a list into
Python How to Split a List to N Chunks of Even Size Read More »
To check the size of a file in Python, use the os.path.getsize() method. This method takes the path of the file as an argument and returns the size of the file in bytes. The os module is part of the standard library. Thus, you do not need to install it. It is available out of
Python How to Check File Size (Theory & Examples) Read More »
To find (and not delete) duplicates in a JavaScript array, you can use this function: Example use: Output: To learn how the above approach works, and what alternatives exist, please keep on reading. This guide shows you ways to find array duplicates and show them instead of deleting them. Besides, you will learn what performance
JavaScript How to Find Duplicates in Array (without Removing) Read More »
Python does not have traditional increment and decrement operators, like ++ or –. Instead, Python uses augmented assignment operators, which combine the assignment operator (=) with a mathematical operation, such as addition (+=) or subtraction (-=). For example, to increment a variable x by 1, you can use the augmented assignment operator x += 1
Python Increment Operator (++) and Decrement Operator (–) Read More »
In Python, the dir() function returns a list of the attributes and methods that belong to an object. This can be useful for exploring and discovering the capabilities of an object, as well as for debugging and testing. For example, let’s list the attributes associated with a Python string: Output: The result is a complete
The dir() Function in Python: A Complete Guide (with Examples) Read More »
