我有一个文档

然后 我给你们写好了一个代码

from PyPDF2 import PdfReader, PdfWriter

def split_pdf(file_path, ranges, output_names):
    # Open the input PDF file
    with open(file_path, 'rb') as pdf_file:
        reader = PdfReader(pdf_file)
        total_pages = len(reader.pages)

        if len(ranges) != len(output_names):
            raise ValueError("Number of ranges must match the number of output names.")

        for i, page_range in enumerate(ranges):
            writer = PdfWriter()
            start, end = page_range

            # Ensure the page range is within the total pages
            if start < 1 or end > total_pages or start > end:
                raise ValueError(f"Invalid page range: {start}-{end}")

            for page_num in range(start - 1, end):
                wr