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Task

How do skilled coders use regexes?

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Applications involve three steps.

Define your regex (the search pattern)
Choose the helper function from the re module that does what you want.
Write code that does what you want.

Example: Finding all emails in text.

import re

# 1. Define a regex that matches email address.  
regex = r"[\w\.-]+@[\w\.-]+\.\w+"
text = "Contact help@chat.com or info@openai.org."

# 2. Select a helper function to find all matches 
emails = re.findall(regex, text)
print(emails)

# Results: ['help@chat.com', 'info@openai.org']