Every computer scientist knows the asterisk quantifier of regular expressions. But many non-techies know it, too. Each time you search for a text file *.txt on your computer, you use the asterisk operator. But how does it work? This article is all about the asterisk * quantifier in Python’s re library. Study it carefully and master … Read more
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 … Read more
This tutorial is all about the AND operator of Python’s re library. If you’ve been reading this carefully, you may ask: “WHAT — why is there an AND operator for regular expressions?” (And rightly so.) Sure, there’s the OR operator (example: ‘iPhone|iPad’). But what’s the meaning of matching one regular expression AND another? There are different … Read more
This tutorial is all about the or | operator of Python’s re library. You can also play the tutorial video while you read: Related article: Python Regex Superpower – The Ultimate Guide What’s the Python Regex Or | Operator? Given a string. Say, your goal is to find all substrings that match either the string ‘iPhone’ … Read more
This article is all about the start of line ^ and end of line $ regular expressions in Python’s re library. These two regexes are fundamental to all regular expressions—even outside the Python world. So invest 5 minutes now and master them once and for all! You can also listen to the video as you scroll … Read more
This article is all about the plus “+” symbol in Python’s re library. Study it carefully and master this important piece of knowledge once and for all! You can also watch the article video while you read over the explanations: Related article: Python Regex Superpower – The Ultimate Guide What’s the Python Re Plus + Quantifier? … Read more