Python Character Set [Regex Tutorial]

This tutorial makes you a master of character sets in Python. (I know, I know, it feels awesome to see your deepest desires finally come true.)

As I wrote this article, I saw a lot of different terms describing this same powerful concept such as “character class“, “character range“, or “character group“. However, the most precise term is “character set” as introduced in the official Python regex docs. So in this tutorial, I’ll use this term throughout.

Read the full article at:

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Could you please elaborate why we see difference in output of [^a-e] Vs [^a-e]+ for 5th and 6th example