Python list returning empty
Check List Is Empty in PythonPython Python List Created: February-07, 2021 | Updated: February-28, 2021 Show This tutorial will introduce how to check if a list is empty in Python. Use the if not Statement to Check if a List Is Empty or NotIn Python, if a list or some other data type is empty or NULL then it is considered False. The if not statement is used to execute a block of code if a condition is False; thus, we can use it to check if a list is empty or not. The following code will explain this. lst = [] if not lst: print("Empty") else: print("Not Empty")Output: Use the len() Function to Check if a List Is Empty or NotThe len() function in Python returns the total number of elements in a list. So if the len() function returns 0 then the list is empty. We will implement this in the code below. lst = [] if len(lst)==0: print("Empty") else: print("Not Empty")Output: Note that this method is considered a little slow but also works with a numpy array, whereas the if not method fails with numpy arrays. Use an Empty List [] to Check if a List Is Empty or Not in PythonThis is an unconventional method and is not used very frequently, but still, it is worth knowing and provides the same result. In this method, we directly compare our list to an empty list, and if the comparison returns True, then the list is empty. For example, lst = [] if lst == []: print("Empty") else: print("Not Empty")Output: EmptyWrite for us DelftStack articles are written by software geeks like you. If you also would like to contribute to DelftStack by writing paid articles, you can check the write for us page. Related Article - Python List
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