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Regular Expressions Development Tutorials, Guides & Insights

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Understanding Regular Expressions with `re` in Python

Tutorial October 24, 2024
python

  • The pattern r"[+-]?\d+(\.\d+)?" matches numbers like -3.5 and +27.85. It can handle both signed and unsigned numbers with a decimal point.

You can modify the pattern to match only positive numbers by removing the optional negative sign.

Python Regular Expressions (Regex) Cheatsheet

Cheatsheet August 03, 2024
python

text = "Contact me at 123-456-7890 or 987.654.3210"
phone_pattern = r'\d{3}[-.]\d{3}[-.]\d{4}'
phones = re.findall(phone_pattern, text)
print(phones)  # Output: ['123-456-7890', '987.654.3210']

This cheat sheet provides a quick reference to the most common regex patterns and functions in Python. For more complex regex patterns and usage, consider exploring the Python re module documentation.

Validate Password Strength

Code January 26, 2024
javascript

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