duplicate_lines.py

import re

def clean_line(line):
    """Clean a line by stripping formatting differences."""
    line = line.strip().lower()  # Remove leading/trailing spaces and convert to lowercase
    line = re.sub(r'[^\w\s]', '', line)  # Remove punctuation marks
    line = ' '.join(line.split())  # Remove extra spaces
    return line


def remove_duplicates(input_file, output_file):
    """Remove duplicate lines from a text file while ignoring formatting differences."""
    unique_lines = set()
    cleaned_lines = []
    duplicate_count = 0

    with open(input_file, 'r', encoding='utf-8') as file:
        for line in file:
            cleaned_line = clean_line(line)
            if cleaned_line not in unique_lines:
                unique_lines.add(cleaned_line)
                cleaned_lines.append(line)
            else:
                duplicate_count += 1

    with open(output_file, 'w', encoding='utf-8') as file:
        file.writelines(cleaned_lines)

    print(f"{duplicate_count} duplicates removed. Cleaned lines saved to '{output_file}'.")

# Usage example:
input_file = 'all_prompts.txt'
output_file = 'all_prompts_deduped.txt'
remove_duplicates(input_file, output_file)