Как разбить файл на несколько других в python?

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import os

def split_file(input_file, output_directory):
    with open(input_file, 'r') as file:
        lines = file.readlines()
    
    os.makedirs(output_directory, exist_ok=True)
    
    for i, line in enumerate(lines):
        output_file = os.path.join(output_directory, f'file_{i}.txt')
        
        with open(output_file, 'w') as file:
            file.write(line)

# Пример использования:
split_file('input.txt', 'output_directory')

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import os

def split_file(input_file, output_directory, lines_per_file):
    with open(input_file, 'r') as file:
        lines = file.readlines()

    os.makedirs(output_directory, exist_ok=True)
    
    file_counter = 1
    current_lines = []
    for i, line in enumerate(lines):
        current_lines.append(line)
        if len(current_lines) == lines_per_file or i == len(lines) - 1:
            output_file = os.path.join(output_directory, f'file_{file_counter}.txt')
            with open(output_file, 'w') as file:
                file.writelines(current_lines)
            file_counter += 1
            current_lines = []

# Пример использования:
split_file('input.txt', 'output_directory', 100)  # разбить файл на части по 100 строк