If you check the source code of CPython, you will find a function called PySlice_GetIndicesEx () which figures out indices to a slice for any given parameters. Here is the logical equivalent code in Python.

Jul 19, 2015 · The docs mention that this function is used in NumPy and give no examples of usage (it's said how to use it but it's not said when to use it). Moreover, I've never seen this function used in any …

Oct 12, 2010 · The index or slice is passed to the methods as a single argument, and the way Python does this is by converting the slice notation, (1:10:2, in this case) to a slice object: slice(1,10,2).

python Modifying slice of list in function Asked 8 years, 11 months ago Modified 1 year, 7 months ago Viewed 4k times

Jun 3, 2015 · From a comment in CPython source about slice function : Return a new slice object with the given values. The start, stop, and step parameters are used as the values of the slice object …

Jul 31, 2018 · 3 Python strings are immutable. This means that you must create at least 1 new string in order to remove the comma, as opposed to editing the string in place in a language like C.

Nit: " Slicing Python lists always creates copies "—except when they are assigned to, as in a[2:4] = reversed(a[2:4]) in the OP's example. People may be led to think that x = reversed(x) and x.reverse() …

Feb 16, 2018 · You may use Python's slice() function with all the capabilities provided by the slice notation. Internally, both slice() function and the slice notation uses the slice object.

Python provides slicing functionality for lists, but for this question, you will implement your own function capable of producing list slices (note: you cannot use the slicing operator in your solution).

Here’s a useful invariant of slice operations: s[:i] + s[i:] equals s. For non-negative indices, the length of a slice is the difference of the indices, if both are within bounds. For example, the length of word[1:3] …