python - How can I find the index for a given item in a list? - Stack ...

@stefanct this likely does double the complexity, I believe the in operator on a list has linear runtime. @ApproachingDarknessFish stated it would iterate twice which answers your question, and is right in saying that doubling the linear complexity is not a huge deal.

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Python List index() – Find Index of Item | GeeksforGeeks

Syntax of List index() method. list.index(element, start, end) Parameters: element (required): The item to search for. start (optional): Index to start the search from (default is 0). end (optional): Index to end the search (exclusive, default is end of list). Returns: The first index of element in the list within the specified range.

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Python - Access List Items - W3Schools

Python - Access List Items ... Note: The search will start at index 2 (included) and end at index 5 (not included). Remember that the first item has index 0. By leaving out the start value, the range will start at the first item: Example. This example returns the items from the beginning to, but NOT including, "kiwi":

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Python Find in List – How to Find the Index of an Item or Element in a List

Learn three ways to find the index of an element in a list in Python: using the index() method, a for-loop, and list comprehension. See examples, syntax, and tips for using these techniques.

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Get the index of an item in Python List – 3 Easy Methods

How to get the index of an item in a Python List? Having understood the working of Python List, let us now begin with the different methods to get the index of an item of the List. Method 1: List Comprehension. Python List Comprehension can be used to avail the list of indices of all the occurrences of a particular element in a List. Syntax:

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Find the Index of an Item in a List in Python | note.nkmk.me - nkmk note

Specify the search range for the index() method. The index() method supports optional second and third arguments i and j, allowing you to specify a search range from the ith to jth elements (with j exclusive). If j is not provided, the search continues to the end of the list.. Regardless of the range specified, the returned index is relative to the start of the full list.

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Python List Index: Find First, Last or All Occurrences - datagy

The Python list.index() method returns the index of the item specified in the list. The method will return only the first instance of that item. ... Method Explained list.index( element, # The element to search for start, # The index to start searching at end # The index to end searching at ) Let’s break these parameters down a little further ...

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Python List index() - Programiz

list index() parameters. The list index() method can take a maximum of three arguments: element - the element to be searched; start (optional) - start searching from this index; end (optional) - search the element up to this index

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How to find index of an item in a list? - Python Examples

Python - Find Index of Element in a List. To find the index of a specific element in a given list in Python, you can call the list.index() method on the list object and pass the specific element as argument. index = mylist.index(element) The list.index() method returns an integer that represents the index of first occurrence of specified ...

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How to Get the Index of an Element in a List in Python? - Python Guides

The best and most recommended way to find the index of an element in a list in Python is by using the index() method. This built-in method returns the index of the first occurrence of the specified element. Syntax list.index(element) Example. Let me show you an example of it. Suppose we have a list of popular cities in the USA:

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