What is slicing in Python?

 Slicing in Python is a way to extract a portion or subset of a sequence, such as a string, list, or tuple. It is done by specifying two indices separated by a colon (:). The first index is the starting position, and the second index is the ending position. For example, if you have a list of numbers called 'numbers', you can extract the first three elements like this:

This will output '[1, 2, 3]', which is the first three elements of the numbers list. You can also omit the starting index to start from the beginning, or omit the ending index to go to the end, like this:

This will output '[2, 3, 4, 5]', which is all the elements of the numbers list except for the first one.
Slicing is a powerful and flexible tool that allows you to work with sublists, substrings, and sub-arrays in an efficient and concise way.