PythonAdvanced

Regular Expressions

Python regular expressions with the re module: search, findall, sub, and split to match and transform text patterns.

01Search for a pattern

main.py

import re
text = "Contact: john@example.com"
match = re.search(r"\w+@\w+\.\w+", text)
print(match.group())

Output

john@example.com

main.py

import re
text = "Call 123 or 456 today"
numbers = re.findall(r"\d+", text)
print(numbers)

Output

['123', '456']

main.py

import re
text = "hello world"
print(re.sub(r"o", "0", text))

Output

hell0 w0rld

main.py

import re
text = "a1b2c3d"
print(re.split(r"\d", text))

Output

['a', 'b', 'c', 'd']