![]() Any value that doesn’t have a corresponding zip item gets filled with this fillvalue. The function takes any number of iterables as well as an optional fillvalue. zip_longest() function looks like: itertools.zip_longest(*iterables, fillvalue=Nona) For this reason, the built-in itertools package comes with a. Now, this may not be what you want to happen. Let’s verify this by zipping two lists of different lengths: list_short = list(range(5)) This means, that if you pass in a list that is 5 items long, and another list that is one million items long, you’ll end up with a zip item that contains five items. ![]() Zipping lists of unequal or different lengths results in a zip object that is as long as the shortest iterable in the items being passed in. How to Zip Lists of Different Lengths in Python Here you have learned how to zip three (or more) lists in Python, using the built-in zip() function! Next, you’ll learn how to work with lists of different lengths. In the example below, you’ll learn how to zip three lists and then return it as a list of tuples, using the built-in list() function: list_a = This works exactly like you’d expect, meaning you just only need to pass in the lists as different arguments. The Python zip() function makes it easy to also zip more than two lists. ![]() In this section you learned how to zip two lists and also how to access its items. We can also do this with a for-loop: list_a = We’ve done this by converting it to a list, using the list() function. In the example below, you’ll learn how to zip two lists in: list_a = Īs shown in the example above, to acces to zipped lists, we need to find ways of unpacking that list. Essentially, the zip() function will accept any number of interables. The function takes care of most things, without much user input. Zipping two lists in Python is a very easy thing to do. Later on in this post, we’ll explore how to work with zipping lists of different lengths. Because of this, if one list contains 5 elements and another list contains a million – the resulting zip object will just contain 5 items. ![]() However, something to keep in mind: the built-in zip function will max out at the length of the shortest iterable provided. ![]() The zip function takes in any number of iterable objects and will zip them together. We can confirm this by checking the type of this: # What is a zip object? The reason for this is that the zip function actually returns a zip object. Now, you may notice that we’ve wrapped the zip() function with the list() function. If you were to zip these two lists, you’d get back the following: # Understanding the Python zip() function It can be helpful to think of the zip() function as combining two or more lists (or other iterable objects) into an object containing ordered tuples from the lists.įor example, you’re given two lists: list_a, which contains and list_b, which contains. Now, this definition is a little complex. The Python zip() function is a built-in function that returns an iterator object containing tuples, each of which contain a series of typles containing the elements from each iterable object.
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