![]() ![]() Finding the difference between two lists can be particularly helpful when dealing with real-world examples.Ĭonsider a scenario where we manage a customer database for an e-commerce platform. This information can be valuable in various scenarios, such as data analysis, filtering, and data validation. By obtaining the difference between two lists, we can isolate the unique elements that distinguish one list from another. The problem is identifying the disparity between two lists in Python. This process is known as finding the difference between two lists. Often, we find ourselves in a situation where we need to compare two lists and determine the elements that exist in one list but not in the other. In Python, lists are an essential data structure that allows us to store and manipulate collections of items. Use the set.symmetric_difference() Method to Find the Difference Between Two Lists in Python.Use the set.difference() Method to Find the Difference Between Two Lists in Python.Use the NumPy Library to Find the Difference Between Two Lists in Python.Use the in Keyword to Find the Difference Between Two Lists in Python.Counter(), reduce(), map() and using sum(), zip() and len() methods together to compare two lists in Python. Note: cmp() build to function for python version 2, In python version 3 it is not available.įor example, if a and b are two lists, thenĪpart from the methods discussed above, you can use collection. The function is also used to compare two elements and return a value based on the arguments passed. The cmp() function is a built-in method in Python used to compare the elements of two lists. Print("Difference of first and second String: " + str(z))ĭifference of first and second String: įirst and Second list are Not Equal What is cmp() Function in Python? # Custom python code to check if list one is equal to list two by taking difference In this example, we need to check the elements one by one whether it's available in List 1 or List2. Output: List first: įirst and Second list are Not Equal Comparing two lists in Python using a Custom Function Print("First and Second list are Not Equal") # initializing list and convert into set object In this example, we first sort the list, so that element of the list is in the same order and then compare both the list with = operator # Python 3 code Example of set() Function 1) Initializing List and Convert into Set Object # initializing list and convert into set objectįirst and Second list are Not Equal Example Using Sort() and = Operator The output of elements might not be in the same order because items passed as list were not in order. It can take arguments like lists, tuples and dictionaries. The set() function in Python uses to take an argument and convert it into a set object. In the following sections, we will see the application of set(), cmp(), and difference() functions. The cmp() function is used to compare two elements or lists and return a value based on the arguments passed. The set() function creates an object that is a set object. Two of the most popular methods are set() and cmp(). ![]() There are different ways to compare lists in Python. In this article, we will understand how to compare two lists in Python. You can do this by using the set(), difference() and sort() methods. To figure out the difference, you have to compare the data items of both lists. While working with lists in Python, you might have encountered two lists which seem similar. ![]()
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