W3Schools
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Python List index() Method
Remove List Duplicates Reverse ... Q&A Python Bootcamp Python Training ... The index() method returns the position at the first occurrence of the specified value....
GeeksforGeeks
geeksforgeeks.org › python › python-list-index
Python List index() - Find Index of Item - GeeksforGeeks
index() method in Python is a helpful tool when you want to find the position of a specific item in a list. It works by searching through the list from the beginning and returning the index (position) of the first occurrence of the element you're ...
Published April 27, 2025
Embarrassingly, i don't understand how list indexing works
Let us step back a little. Before understanding your example, try to grok the example below for i in range(0, 3): print(i) which results in: 0 1 2 And the example below my_list = [42, 6, 2024] for i in range(0, 3): print(i, my_list[i]) Which results in: 0 42 1 6 2 2024 Are those clear to ya? Thanks! More on reddit.com
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August 31, 2024New to python, how can I get index of item in list?
I tried collection.index(33) I then get the error "must be str, not int" That would mean that collection isn't a list but something else. When I try with a list it works as expected: >>> collection = [1,2,3,4,5,6,7,8] >>> collection.index(1) 0 >>> collection.index(33) Traceback (most recent call last): File "", line 1, in ValueError: 33 is not in list Of course it would help if you supplied your code, preferrably uploaded to a text site like pastebin.com or gist.github.com. More on reddit.com
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December 13, 2017Regarding list slicing: can anyone help me understand the reasoning behind inclusive vs. exclusive indexing with negative vs. non-negative integers?
[-1] refers to the last element, so list[0:-1] gives you all but the last element in the same exclusive manner as you saw with positive indices. More on reddit.com
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April 27, 2019list index out of range
The length is returning 3, the index is 0 - 2. Sometimes you randomly get 3 and the error message.
More on reddit.com 8
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October 26, 2018Videos
07:28
Indexing and Slicing Python Lists for Beginners - YouTube
13:51
Python Lists for Beginners - List Indexing, List Methods, List ...
16:51
How to Access Lists in Python (Indexing & Slicing Explained) | ...
Accessing Items in a List using Indexing in Python - YouTube
03:34
How To Find Index Of Item In List Python - YouTube
05:31
How To Iterate Through A List With Index In Python - YouTube
DataCamp
datacamp.com › tutorial › python-list-index
Python List index() Method Explained with Examples | DataCamp
March 28, 2025 - Python's built-in index() function is a useful tool for finding the index of a specific element in a sequence. This function takes an argument representing the value to search for and returns the index of the first occurrence of that value in the sequence. If the value is not found in the sequence, ...
Sentry
sentry.io › sentry answers › python › get the index of a list item in python
Python Index of Item in List Using list.index() | Sentry
2 weeks ago - Call list.index() to find the position of an element, handle ValueError for missing items, and use enumerate with a list comprehension for multiple matches
Programiz
programiz.com › python-programming › methods › list › index
Python List index()
The index() method returns the index of the given element in the list.
Skill Matrix Academy
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Python list index() Method Explained with Practical Examples
November 7, 2025 - In this Python tutorial, you’ll learn what the index() Function does, how it works, and how you can use it to make your code cleaner and faster. The index() Function helps you find the position of an element in a list or string.
Codecademy
codecademy.com › docs › python › lists › .index()
Python | Lists | .index() | Codecademy
June 11, 2025 - Returns the index of the first occurrence of a specified element in a list.
Python documentation
docs.python.org › 3 › tutorial › datastructures.html
5. Data Structures — Python 3.14.6 documentation
The optional arguments start and end are interpreted as in the slice notation and are used to limit the search to a particular subsequence of the list. The returned index is computed relative to the beginning of the full sequence rather than the start argument.
Tutorialspoint
tutorialspoint.com › python › list_index.htm
Python List index() Method
The Python List index() method is used to retrieve the lowest index in a list at which a specified object appears. The object can be anything; a single element or a collection of elements in the form of another list, tuple, set etc.
Railsware
railsware.com › home › engineering › indexing and slicing for lists, tuples, strings, other sequential types in python
Python Indexing and Slicing for Lists, Tuples, Strings, other Sequential Types | Railsware Blog
January 22, 2025 - As it was shown, indexing allows you to access/change/delete only a single cell of a list. What if we want to get a sublist of the list. Or we want to update a bunch of cells at once? Or we want to go on a frenzy and extend a list with an arbitrary number of new cells in any position? Those and lots of other cool tricks can be done with slice notation. Let’s look at this subject – feel free to follow along on your own editor or with an online Python compiler.
Reddit
reddit.com › r/learnpython › embarrassingly, i don't understand how list indexing works
r/learnpython on Reddit: Embarrassingly, i don't understand how list indexing works
August 31, 2024 -
I'm learning data structure and algorithms and i came across a question in the list section. i thought after i had understood python, i had understood list but a question was asked and i find myself finding it hard to understand how the list indexing works.
here's the sample code:
arr = [1, 2, 3, 4, 5, 6]
for i in range(1, 6):
arr[i - 1] = arr[i]
for i in range(0, 6):
print(arr[i], end = " ")
it looks simple to understand but, i just can't understand it.
Top answer 1 of 5
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Let us step back a little. Before understanding your example, try to grok the example below for i in range(0, 3): print(i) which results in: 0 1 2 And the example below my_list = [42, 6, 2024] for i in range(0, 3): print(i, my_list[i]) Which results in: 0 42 1 6 2 2024 Are those clear to ya? Thanks!
2 of 5
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What don't you understand?
Purple Frog Systems
purplefrogsystems.com › home › python lists – what do i need to know?
Python Lists – What do I need to know? - Purple Frog Systems
July 22, 2025 - Access elements of a list using list[index]. Indexing in Python starts at 0, which means that the first element has an index of 0.
iO Flood
ioflood.com › blog › python-get-index-of-item-in-list
Python Get Index of Item In List | 3 Simple Methods
June 29, 2024 - Keep reading for a more detailed explanation, including handling advanced scenarios and alternative approaches. ... Python’s list.index() function is a built-in method that returns the index of the first occurrence of an item in a list.
Kochiva
kochiva.com › home › python list index( ) method – explained with practical examples
Python List Index() Method - Explained with Practical Examples
September 26, 2024 - It returns the position or name of the student who has scored the 3rd highest marks. So, instead of going through the entire list to manually find out who has scored the 3rd highest marks, you just use a simple index function to get results in seconds. Informative article: What is Python | Python Programming Language
Tutorialspoint
tutorialspoint.com › python › python_lists.htm
Python - Lists
To access values in lists, use the square brackets for slicing along with the index or indices to obtain value available at that index.
ReqBin
reqbin.com › code › python › h54arbqc › python-list-index-example
How do I find the index of an element in a Python list?
The optional "start" and "end" arguments restrict the search to a specific subsequence of the list. In Python, list indexes start at 0. You can also check if an element exists in a list using the "in" operator. In this Python List Index example, we get the index of a list item using the list.index() method.
freeCodeCamp
freecodecamp.org › news › indices-of-a-list-in-python-list-indexof-equivalent
Indices of a List in Python – List IndexOf() Equivalent
April 6, 2023 - If you want to start referencing a list of 7 items from the last item, the last item will be -1, and the first item will be -7. To get the index of an item in a list, attach the index() method to the list and pass in the item to the index() method:
StrataScratch
stratascratch.com › blog › how-to-get-the-index-of-an-item-in-a-list-in-python
How to Get the Index of an Item in a List in Python - StrataScratch
September 6, 2024 - Master Python's index() function to efficiently locate items in lists, handle errors with custom functions, and improve data analysis using advanced techniques.
Analytics Vidhya
analyticsvidhya.com › home › python list index: a guide to finding and manipulating list elements
Python List Index: A Guide to Finding and Manipulating List Elements
January 23, 2024 - In this article, we will explore various techniques and methods for working with list indices in Python. ... The index of an element in a list refers to its position within the list. The first element has an index of 0, the second element has ...
freeCodeCamp
freecodecamp.org › news › python-find-in-list-how-to-find-the-index-of-an-item-or-element-in-a-list
Python Find in List – How to Find the Index of an Item or Element in a List
February 24, 2022 - Use the index() method to find the index of an item 1.Use optional parameters with the index() method · Get the indices of all occurrences of an item in a list · Use a for-loop to get indices of all occurrences of an item in a list · Use ...