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Python Slicing – How to Slice an Array and What Does [::-1] Mean?

When you specify a start and end index of 1 and 5, respectively, slicing will select values at index 1, index 2 (1 increment to the previous index), index 3 (1 increment to the previous index) and index 4 (and one increment to the previous index). In this slicing, a step of 1 is used by default. But you can provide a different step.

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list - what does [::-1] mean in python - slicing? - Stack Overflow

The method you used is called Slicing in Python. Slicing syntax in python is as follows, [ <first element to include> : <first element to exclude> : <step> ] where adding the step part is optional. Here is a representation of how python list considers positive and negative index.

https://www.geeksforgeeks.org/python-list-slicing/

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Python List Slicing - GeeksforGeeks

Python list slicing is fundamental concept that let us easily access specific elements in a list. In this article, weâ€™ll learn the syntax and how to use both positive and negative indexing for slicing with examples.Example: Get the items from a list starting at position 1 and ending at position 4 (e.

https://bas.codes/posts/python-slicing/

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A Comprehensive Guide to Slicing in Python - Bas codes

1 for the step value; However, if the step value is negative, the Nones are replaced with-1 for the start value-len(list) - 1 for the stop value; For example, "Python"[::-1] is technically the same as "Python"[-1:-7:-1] Special Case: Copy. There is a special case for slicing which can be used as a shortcut, sometimes:

https://www.pythontutorial.net/advanced-python/python-slicing/

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Python Slicing in Depth - Python Tutorial

Python Slicing: start and stop bounds # The slice seq[start:stop] selects elements starting at the index start and stopping at the index stop (excluding the element at the index stop). In other words, it returns all elements of the sequence at the index n where n satisfies the following expression:

https://www.pythonmorsels.com/slicing/

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List slicing in Python

With Python's slicing syntax, the first item is the start index, and the second item is the stop index.The start index is inclusive, but the stop index is exclusive, meaning Python stops just before the stop index.. So we got the items at index 1 and index 2 because we stopped just before index 3.. Default slice start/stop values. The start and stop values are both optional when slicing.

https://www.pythoncentral.io/how-to-slice-listsarrays-and-tuples-...

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How to Slice Lists/Arrays and Tuples in Python

On the other hand, entering the stop parameter is mandatory since it indicates to Python the index to which slicing is supposed to take place. By default, Python will stop the slicing at the value “stop - 1.” In other words, if the stop value is 5 when using the slice function, Python will only return values till the index value is 4.

https://www.learnbyexample.org/python-list-slicing/

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Python List Slicing - Learn By Example

When slicing lists in Python, you can use negative indices as well. This allows you to reference elements from the end of the list. For example, the index -1 represents the last element, -2 represents the second-to-last element, and so on. Consider the same list of letters. If you wanted to extract the elements from ‘c’ to ‘g’ using ...

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Python Slicing: 9 Useful Methods for Everyday Coding - Analytics Vidhya

Now we will look into the major types of slicing operations in Python. 1. Basic Slicing. Basic slicing refers to extracting a subsequence for data types like string, list, or tuple using syntax [start: end: step]. It is a fundamental tool in Python that allows us to retrieve the subsequences easily. It also works with a variety of data types ...

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slice - How slicing in Python works - Stack Overflow

Explain Python's slice notation. In short, the colons (:) in subscript notation (subscriptable[subscriptarg]) make slice notation, which has the optional arguments start, stop, and step: sliceable[start:stop:step] Python slicing is a computationally fast way to methodically access parts of your data.

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