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 »
To get the size of a Python object, you can use the getsizeof() function from the sys module. This function returns the size of an object in bytes. For example, let’s print the size of a list and the size of an integer: Output: ⚠️ Keep in mind that sys.getsizeof() function only returns the size
How to Get the Size of a Python Object (Examples & Theory) Read More »
You can place an if…else statement into a list comprehension in Python. For example: Notice that the if…else statement in the above expression is not traditional if…else statement, though. Instead, it’s a ternary conditional operator, also known as the one-line if-else statement in Python. Example Given a list of numbers, let’s construct a list of
Python ‘if…else’ in a List Comprehension (Examples) Read More »
In Python, a dictionary is a collection of key-value pairs. Both dictionary.get(‘key’) and dictionary[‘key’] are used to retrieve the value associated with a given key in a dictionary. However, there is a clear difference between the two: To put it short, dictionary.get(‘key’) is the safer way to get value from a dictionary. You shouldn’t use
Python dict.get(‘key’) vs dict[‘key’] — Don’t Use Square Brackets Read More »
In Python, you can use sys.maxsize from the sys module to get the maximum and minimum integer values. The sys.maxsize gives you the maximum integer value and its negative version -sys.maxsize – 1 gives you the minimum integer value. Notice that Python 3.0+ doesn’t limit the int data type and there’s no maximum/minimum value. But
Python Maximum/Minimum Integer Value (with Examples) Read More »
To calculate the number of changed lines between two commits in Git, use the git diff command. It shows the total differences between two commits by listing the files that have been modified, added, or deleted. To view the number of changed lines, use the –shortstat option. To view the number of lines changed between
Git Calculate the Number of Changed Lines between Commits Read More »
The easiest way to check if a JavaScript object is empty is by using the Object.keys to check the length of properties to see if it’s 0. This guide teaches you 5 ways to check if a JavaScript object is empty. Although it only takes one, this is a great chance to learn more about
5 Ways to Test If JavaScript Object is Empty Read More »
