How To Index and Slice Strings in Python

Python strings are sequences of characters that can be accessed through indexing and slicing, with indexing using square brackets like `text[0]` to get individual characters and slicing using `text[start:end:step]` syntax to extract substrings. These techniques enable powerful text manipulation including accessing characters from the end using negative indices, reversing strings with `[::-1]`, and efficiently processing text data for machine learning applications.