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What does the list() function do in Python?

stackoverflow.com › questions › 26581397 › what-does-the-list-function-do-in-python

list() converts the iterable passed to it to a list. If the itertable is already a list then a shallow copy is returned, i.e only the outermost container is new rest of the objects are still the same.

>>> t = (1,2,3,4,[5,6,7,8],9)
>>> lst = list(t) 
>>> lst[4] is t[4]  #outermost container is now a list() but inner items are still same.
True

>>> lst1 = [[[2,3,4]]]
>>> id(lst1)
140270501696936
>>> lst2 = list(lst1)
>>> id(lst2)
140270478302096
>>> lst1[0] is lst2[0]
True

Answer from Ashwini Chaudhary on Stack Overflow

w3schools.com › python › python_ref_list.asp

Python List/Array Methods

Python has a set of built-in methods that you can use on lists/arrays.

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Python list() Function

Python Examples Python Compiler Python Exercises Python Quiz Python Challenges Python Server Python Syllabus Python Study Plan Python Interview Q&A Python Bootcamp Python Certificate Python Training ... The list() function creates a list object.

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Python list() Function - GeeksforGeeks

March 4, 2025 - list() function in Python is used to create lists from iterable objects. An iterable is an object that can be looped over, such as strings, tuples, sets, dictionaries and other collections.

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Python List Functions & Methods Tutorial and Examples | DataCamp

December 19, 2022 - The main characteristics of Python lists are that they are iterable, ordered, indexed, mutable, and allow duplicated values. Place a sequence of items inside square brackets and separate them by comma, e.g., ['cake', 'ice-cream', 'donut']. Alternatively, use the list() built-in function with double brackets: list(('cake', 'ice-cream', 'donut')).

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Python Lists - GeeksforGeeks

We can also create a list by passing an iterable (like a tuple, string or another list) to the list() function. ... We can use the multiplication operator * to create a list with repeated items. ... Elements in a list are accessed using indexing. Python indexes start at 0, so a[0] gives the ...

Published January 10, 2026

programiz.com › python-programming › methods › built-in › list

Become a certified Python programmer. Try Programiz PRO! ... The list() constructor converts an iterable (dictionary, tuple, string etc.) to a list and returns it.

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Python List methods - GeeksforGeeks

Python list methods are built-in functions that allow us to perform various operations on lists, such as adding, removing, or modifying elements.

Published July 23, 2025

stackoverflow.com › questions › 26581397 › what-does-the-list-function-do-in-python

What does the list() function do in Python? - Stack Overflow

list() converts the iterable passed to it to a list. If the itertable is already a list then a shallow copy is returned, i.e only the outermost container is new rest of the objects are still the same.

>>> t = (1,2,3,4,[5,6,7,8],9)
>>> lst = list(t) 
>>> lst[4] is t[4]  #outermost container is now a list() but inner items are still same.
True

>>> lst1 = [[[2,3,4]]]
>>> id(lst1)
140270501696936
>>> lst2 = list(lst1)
>>> id(lst2)
140270478302096
>>> lst1[0] is lst2[0]
True

Python has a well-established documentation set for every release version, readable at https://docs.python.org/. The documentation for list() states that list() is merely a way of constructing a list object, of which these are the listed ways:

Using a pair of square brackets to denote the empty list: []
Using square brackets, separating items with commas: [a], [a, b, c]
Using a list comprehension: [x for x in iterable]
Using the type constructor: list() or list(iterable)

The list() function accepts any iterable as its argument, and the return value is a list object.

Further reading: https://docs.python.org/3.4/library/stdtypes.html#typesseq-list

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Python documentation

docs.python.org › 3 › tutorial › datastructures.html

5. Data Structures — Python 3.14.3 documentation

This chapter describes some things you’ve learned about already in more detail, and adds some new things as well. More on Lists: The list data type has some more methods. Here are all of the method...

Data Science Discovery

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Lists and Functions in Python - Data Science Discovery

In addition to lists, Python provides functions to to group blocks of code that perform a specific task. The use of functions will help make our code more organized, readable, and efficient by avoiding repetition and allowing the same code to be used in multiple places.

tutorialspoint.com › python › python-list-function.htm

Python list() Function

The Python list() function is used to create a new list. A list is a collection of items that can hold different types of data, such as numbers, strings, or other objects. It is an ordered and mutable (changeable) data structure, allowing you to store and organize multiple values in a single variabl

Python documentation

docs.python.org › 3 › library › functions.html

Built-in Functions — Python 3.14.3 documentation

2 weeks ago - The function deletes the named attribute, provided the object allows it. For example, delattr(x, 'foobar') is equivalent to del x.foobar. name need not be a Python identifier (see setattr()). ... Create a new dictionary. The dict object is the dictionary class. See dict and Mapping Types — dict for documentation about this class. For other containers see the built-in list, set, and tuple classes, as well as the collections module.

cs.du.edu › ~intropython › intro-to-programming › list_methods.html

List methods - Introduction to Programming

The full list can be found at Python list documentation by w3schools or Offical python documentation on list methods. Here are the list methods you'll learn: the count() and index() methods for counting and searching · theinsert() and extend() methods for adding elements · the pop() and remove() methods and the del keyword for removing elements · the reverse() and sort() methods and the sorted() function for rearranging elements

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Python List Functions - Tutorial With Examples

April 1, 2025 - The Python list method len() returns the size(number of items) of the list by calling the list object’s own length method. It takes in a list object as an argument and doesn’t have a side effect on the list. ... Where s can be either a sequence or collection. Example 1: Write a function that computes and returns the size/length of a list.

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Python List Functions: 18 Definitions & Examples

March 20, 2023 - HubSpot’s Website Blog covers everything you need to know to build maintain your company’s website.

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Python List Methods Explained with Examples | Practice Exercises

March 15, 2021 - There are different methods used with lists in python. In other words, there are many Python List Methods. In this lesson, we will focus on these Python List Methods and we will give different examples for each of them. Let’s start to learn medhods of lists in python, python list functions.

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Python List Functions: A Guide To All Operations (+Examples)

March 30, 2025 - Python list functions let you manipulate lists efficiently. Learn key functions like list(), append(), sort(), & more with examples to enhance your Python skills.

medium.com › @wvrushali27 › built-in-list-functions-methods-in-python-a761342452dd

Built-in List Functions & Methods in Python | by Vrushali Walekar | Medium

November 3, 2023 - The Python’s List extends() method iterates over an iterable like a string, list, tuple, etc. and adds each element of the iterable to the end of the python list. ... Here, f2 is a list, we can extend the list using a extend() function and pass the parameter that is “bac” it will extend the list taking a character one by one.

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Python List Methods Every Developer Should Know

October 15, 2024 - Lists are like dynamically sized arrays found in other programming languages like C++ or Java. In Python, a Function may be passed input parameters and may or may not return a result. Method, on the other hand, maybe passed off as an object instance and may or may not result in the expected output.

developers.google.com › google for education › python › python lists

Python Lists | Python Education | Google for Developers

January 23, 2026 - Python has a great built-in list type named "list". List literals are written within square brackets [ ]. Lists work similarly to strings -- use the len() function and square brackets [ ] to access data, with the first element at index 0.