Reference library

Strings & text

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

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Strings & text easy

How to Build a Text Processor in Python

This code defines functions to count words, sentences, and find the longest word in a text, then prints basic statistics like uppercase and lowercase versions.

text-processing strings word-count
Python 
def count_words(text):
    return len(text.split())


def count_sentences(text):
    sentence_endings = ".!?"
    count = 0
    for char in text:
        if char in sentence_endings:
            count += 1
    return count


def longest_word(text):
    words = text.split()
    if not words:
        return ""
    retur…
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Strings & text — Python code examples

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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.

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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.

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