Reference library

Strings & text

Format, split, join, parse, and clean text — everyday Python string patterns.

1 match
Strings & text easy

Find the Longest Word in a Sentence in Python

Splits a sentence into words and returns the longest one using the built-in max() function with len as the key.

strings max split
Python 
def find_longest_word(sentence: str) -> str:
    words = sentence.split()
    if not words:
        return ""
    return max(words, key=len)

if __name__ == "__main__":
    test_sentence = "The quick brown fox jumps over the lazy dog"
    longest = find_longest_word(test_sentence)
    print(f"Longest word: '{longest}'…
15 0 Open

Browse by section

Each section groups closely related Python snippets.

Strings & text — Python code examples

What you will find here

This page collects strings & text snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.

Samples vs tutorials and challenges

Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.

Related coding tools

Free online Python IDE Write and run Python in your browser — no install. Free Python code formatter Format with autopep8 — side-by-side PEP 8 cleanup. Python code samples Copy-ready snippets to study and run in the IDE.