Is there a clever way to count how many unique kanji appear in a deck?

Anki Help
6

For anyone studying Japanese, you might like this. I asked CHAT GPT to rewrite the code. Now it outputs all the Kanji in the Anki deck, writes how many times that kanji appears, then lists them all in descending order.

import sys
import re

def main():
    # set input and output files
    input_file = "kanji.txt"
    output_file = "output.txt"
    
    # read input file
    with open(input_file, "r", encoding="utf-8") as f:
        text = f.read()

    # remove kanji within <div id=tag> tags
    text = re.sub(r'<div id=tag>.*?</div>', '', text, flags=re.DOTALL)

    # count kanji
    kanji_count = {}
    for char in text:
        if '\u4e00' <= char <= '\u9fff':
            if char in kanji_count:
                kanji_count[char] += 1
            else:
                kanji_count[char] = 1
    
    # sort kanji by frequency
    kanji_freq = [(kanji, freq) for kanji, freq in kanji_count.items()]
    kanji_freq.sort(key=lambda x: x[1], reverse=True)
    
    # write results to output file
    with open(output_file, "w", encoding="utf-8") as f:
        f.write(f"Total Unique Kanji: {len(kanji_freq)}\n\n")
        for kanji, freq in kanji_freq:
            f.write(f"{kanji}: {freq}\n")

if __name__ == "__main__":
    if len(sys.argv) == 1:
        main()
    else:
        print("Usage: python kanji.py")

name the script kanji.py
name the exported list of cards kanji.txt
it outputs to output.txt

kanji appearing in tags are not included

if you dont know how to run the script, chat gpt taught me when i asked :slight_smile: