使用pymupdf每页覆盖2个pdf文件

import fitz

pdf1 = fitz.open("file1.pdf")
pdf2 = fitz.open("file2.pdf")

num_pages1 = len(pdf1)
num_pages2 = len(pdf2)

output_pdf = fitz.open()

for i in range(max(num_pages1, num_pages2)):
    page1 = pdf1[i] if i < num_pages1 else None
    page2 = pdf2[i] if i < num_pages2 else None
    
    rect = fitz.Rect(0, 0, 595, 842)  # 设置页面大小为A4纸（595x842）
    new_page = output_pdf.new_page(width=rect.width, height=rect.height)
    
    if page1:
        new_page.insert_pdf(page1, rect)
    if page2:
        new_page.insert_pdf(page2, rect)

output_pdf.save("output.pdf")
output_pdf.close()