re.findall()

Regex

Returns all non-overlapping matches of the pattern in the string as a list.

Signature

re.findall(pattern, string)

Returns

list

Example

import re
nums = re.findall(r'\d+', 'I have 3 cats and 2 dogs')
print(nums)  # ['3', '2']

About re.findall()

re.findall is a Python regex function with the signature re.findall(pattern, string). Returns all non-overlapping matches of the pattern in the string as a list. It returns a value of type list.

Python provides a rich set of built-in functions and standard library modules that cover common programming tasks. Understanding these functions helps you write more idiomatic, efficient Python code. The re.findallfunction is commonly used in data processing, web development, scripting, and automation tasks.

When working with re.findall(), consider edge cases like empty inputs, None values, and type mismatches. Python's duck typing means many built-in functions work with any object that implements the required protocol (e.g., __len__ for len(), __iter__ for iteration). This flexibility is a key strength of Python's design philosophy.

Related Functions

re.search()re.match()re.sub()re.compile()