python import os import kmatch def search_keywords(directory, keyword): kmp = kmatch.KMP(keyword) for root, _, files in os.walk(directory): for file in files: with open(os.path.join(root, file), 'r') as f: lines = f.readlines() for line_index, line in enumerate(lines): found_positions = kmp.match(line) if found_positions: pip install kmatch