Reference library

Dictionaries & sets

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

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Dictionaries & sets easy

Count Word Frequency in Python with dict

Count how often each word appears in a text using Python's collections.Counter and regular expressions.

dictionary counter frequency
Python 
from collections import Counter
import re

def count_word_frequency(text):
    """Count frequency of each word in text (case-insensitive)."""
    words = re.findall(r"\b\w+\b", text.lower())
    return dict(Counter(words))

if __name__ == "__main__":
    sample_text = "The quick brown fox jumps over the lazy dog. The …
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