The Pythonlen()is used to get the total number of characters present in the string and check if the length of the string is 0 to identify the string is empty. Actually, thelen()function returns the length of an object. The object can be a string, a list, a tuple, or other objects ...
To check if a list is empty or not, we can use the if not statement in Python. Note: Empty lists are treated as falsy values in Python. Here is an example: names = [] if not names: print("list is empty") Output: list is empty Similarly, we can also use the len() function ...
Not none In Python, “not none” is a boolean expression that evaluates to True if there is at least one item in a list, and False otherwise. How to : empty in python def empty(self): for i in range(len(self)): self[i] = ”...
Here, we are implementing a python program to check whether all elements of a list are unique or not?It's very simple to check, by following two stepsConvert the list in a set (as you should know that set contains the unique elements) – it will remove the duplicate elements if any....
An important part when dealing with an iterable object, in this case a list, is checking if there's anything to iterate through. If not handled properly, this can lead to a lot of unwanted errors. Python provides various ways to check if our list is empty or not, some implicit and ...
if not my_list: print("List is empty") This is using the Truth Value Testing in Python, also known as implicit booleaness or truthy/falsy value testing.Among other rules it defines that empty sequences and collections like '', (), [], {}, set(), range(0) are all considered false...
Check if a list is not empty in MongoDB - For this, use the $size operator. Let us first create a collection with documents −> db.checkIfListIsNotEmptyDemo.insertOne({UserFriendGroup:[John,David]}); { acknowledged : true, insertedId : ObjectId(5
Here, we are going to learn how to check whether a vector is empty or not in C++ STL (Standard Template Library)? There are two ways to check whether list is empty or not 1) using vector::empty() and 2) vector::size().
Hello, codedamn learners! Today, we are going to delve deep into a ubiquitous yet crucial aspect of Python programming: checking if a list is empty. This task may seem trivial, but understanding it thoroughly can make a significant difference in your
Using len() Function to Check if a String is Empty or Whitespace in Python Thelen()function is used to find the length of an iterable object such as a list, string, tuple, etc. It takes the iterable object as its input argument and returns the length of the iterable object. ...