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Practice your Python Pandas data science skills with problems on StrataScratch! https://stratascratch.com/?via=keith In this video we go through all the fundamentals of using regular expressions (regexes) to match patterns in programming. In this video we cover the following: - Character Sets [a-zA-Z0-9] - Quantifiers *, +, ?, {3,5} - Metacharacters ^ . | $ - Character Classes \b \s \w \d - Groups - Lookahead & Lookbehind assertions - and more! There is a detailed timeline down below. In a future video we will apply what we learn in this one to the Python programming language (re library) -- subscribe to not miss that! Resources! Source code & txt files: https://github.com/keithgalli/regular... Practice exercise video: • Practice Regular Expressions with Reg... Cheat sheet: https://cheatography.com/davechild/ch... Regex golf: https://alf.nu/RegexGolf Javascript Info: https://javascript.info/regexp-lookah... ------------------------- Follow me on social media! Instagram | / keithgalli Twitter | / keithgalli TikTok | / keithgalli ------------------------- If you are curious to learn how I make my tutorials, check out this video: • How to Make a High Quality Tutorial V... Practice your Python Pandas data science skills with problems on StrataScratch! https://stratascratch.com/?via=keith Join the Python Army to get access to perks! YouTube - / @keithgalli Patreon - / keithgalli *I use affiliate links on the products that I recommend. I may earn a purchase commission or a referral bonus from the usage of these links. ------------------------- Video timeline! 0:00 - Video overview & topics covered 1:43 - Basic regex syntax (building up an intuition) 4:23 - Character Sets Overview ([A-Za-z0-9]) 5:57 - Quantifiers Guide (*, +, ?, {3,5}) 9:30 - Guided Exercise: Find all words that don't use vowels 11:08 - Helpful cheat sheet to remember regex syntax in the real-world 12:47 - Matching words/patterns of a specific length ({3,5}) 14:58 - OR operator overview 17:14 - Guided Exercise: Match valid sentences (starts with capital letter, ends with period) 21:18 - Character classes overview (\w, \b, \d, \s) 23:13 - Escaping Characters 25:02 - Practice Exercise #1: Write a regular expression to match meme text format 30:39 - Practice Exercise #2: Write a regular expression to match a specific date format 39:03 - Groups overview 50:16 - Lookahead & Lookbehind Assertions 1:00:18 - Practice Exercise #3: Detect if same word pops up multiple times in a sentence 1:06:04 - Practice Exercise #4: Password matching with rules 1:16:16 - Some final recommendations! (additional practice, chatgpt, etc.)