Apr 24, 2020 · You can access only certain parts of an array with slicing: slicednames = names[2:] [3,45,12] This will save all elements from names to the new array, starting with the 3rd element.

Nov 17, 2017 · Lets say I have an array. a = [[[1, 2], [3, 4]], [[5, 6], [7, 8]], [[9, 10], [11, 12]], [[13, 14], [15, 16]], [[17, 18], [19, 20]]] At the end I would like an array. b = [[[5, 6]],[[9, 10]]] I thought that. b = a[1:3][0:1] would work. But from that i get. b=[[[5, 6], [7, 8]]]

Mar 5, 2021 · array1= ['8', '-9.7521970601311E-5', '1237.16', '1265.50"', 'spec2', '=', '"2', '59', '0', '9810.07016902'] . I want to select the data point that ends with E-some number. In the case of array1 that data point is -9.7521970601311E-5. The arrays are not symmetric and the data points with the number ending in E are quite random.

So you've got an list, tuple or array and you want to get specific sets of sub-elements from it, without any long, drawn out for loops? Python has an amazing feature just for that called slicing.

Dec 8, 2022 · In this article, we've briefly looked at how to declare arrays in Python, how to access values in an array, and also how to cut – or slice – a part of an array using a colon and square brackets. We also learned how slicing works …

Dec 6, 2024 · We slice the array into two parts: arr [:2] (the first two elements) and arr [2:] (the remaining elements). We then unpack the two slices into first_two and rest. This technique allows for more control over what parts of the array you want to unpack.

Mar 8, 2025 · Python list slicing is fundamental concept that let us easily access specific elements in a list. In this article, we’ll learn the syntax and how to use both positive and negative indexing for slicing with examples.

Dec 3, 2024 · When working with lists in Python, we often need to extract specific elements. The easiest way to extract an element from a list is by using its index. Python uses zero-based indexing, meaning the first element is at index 0. Other methods that we can use to extract elements from list are:

Mar 30, 2020 · Array slicing in Python is a powerful feature that allows you to create new sub-arrays from existing arrays by specifying the starting and ending indices. The new sub-array is a portion of the original array, and it can be used for a variety of purposes, such as processing specific data, managing memory usage, and more.

Array slicing is a powerful feature in Python that allows you to extract specific parts of an array. In this article, we will explore what array slicing is, why it is essential, and how you can use it in Python.