Reference library

Dictionaries & sets

Key–value maps, uniqueness, counting, grouping, and fast lookups.

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Dictionaries & sets easy

How to Count Word Frequencies in Python with Counter and Sets

This code processes a text string by lowercasing, splitting into words, counting frequencies with Counter, and extracting unique and sorted word lists using sets.

counter sets text-processing
Python 
from collections import Counter

def process_text(text):
    words = text.lower().split()
    word_counts = Counter(words)
    unique_words = set(words)
    sorted_words = sorted(unique_words)
    
    return {
        "total_words": len(words),
        "unique_words": len(unique_words),
        "word_frequencies": di…
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