The Programming Recommendations (PEP 8) suggests that the not operator could be used in conjunction with the if condition, when the data type of the variable being checked for emptiness is known beforehand.. >>> a=[] # Empty lists evaluate to False >>> if not a: print ("list is empty") else: print ("list is not empty") This blog post discusses which is the best method to find if a string is empty in python. It returna true if there are only whitespace characters in the string. Here’s a function to check if a string is empty: [code]def is_empty(string): return not string.strip() [/code]Empty sequences are falsy and evaluate to False in a boolean context. Python isspace() method is used to check space in the string. In Python, empty list object evaluates to false. In this post, we will see how to check if a string is empty in Python. 1. Python: Check if string is empty or blank or contain spaces only Python: Open a file using “open with” statement & benefits explained with examples Python : How … date = None. A simple solution is to use the == operator to compare the given string with an empty string. A Null or empty string means that there is a string but its content is empty – len(‘ ’) ==0. If String is of length zero that means it is an empty string. 1. Python – Check if String is Empty. Python String isspace() Method. You can check length of String in Python using len() function. Using len() function to check if String is empty. Hence following conditional statement can be used to check if list is empty. This can be used for lists and tuples as well. This image shows a clear difference between Non-Zero, 0, … You can use this to check if a string is empty or not. How to check if a string contains a substring. How to Split String with Empty Separator on Python. The is operator returns True if the two variables point to the same data object, else, it returns False.. Syntax: variable1 is variable2 Example: Let's initiate a list object, get each string value using for, and copy it to the newly created object: For Python, the term ‘Empty string’ is preferred. If you need to check if a String is empty or not in Python then you have the following options. To check if string is empty, you can either use the string variable as is inplace of a condition along with not operator, or verify if the string equals empty string "" using equal to operator.. No matter whether it’s just a word, a letter or a phrase that you want to check in a string, with Python you can easily utilize the built-in methods and the membership test in operator. We all would have known about the naive method. Image Explains it all. Technique 3: Python ‘is’ operator to perform string equals check in python . Otherwise it returns false. In this tutorial, we will write example programs for … Using == operator. This is an Empty string : data =‘’ And this is None. Does Python have something like an empty string variable where you can do: if myString == string.empty: Regardless, what's the most elegant way to check for empty string values? Python “is” operator can be used to efficiently check for the equality of two string objects. In the naive method we would do something just like this. In this tutorial, I’ll show you how to know if a string contains a substring. Space, newline, and tabs etc are known as whitespace characters and are defined in the Unicode character database as Other or Separator.. Signature Using the not operator with the if condition. This is for beginners and not recommended. But let us see which one is the most effective and efficient method to find the empty string. I find hard coding "" every time for checking an empty string not as good.