raise DeprecationError(msg) PyPDF2.errors.DeprecationError: mediaBox is deprecated and was removed in PyPDF2 3.0.0. Use mediabox instead.

在PyPDF2库中，如果你使用了`mediaBox`参数，会出现`DeprecationError`错误，提示该参数已经被废弃并在PyPDF2 3.0.0版本中移除了。相反，你应该使用`mediabox`参数来替代`mediaBox`参数。

以下是一个示例代码，演示如何使用`mediabox`参数来替代`mediaBox`参数：

from PyPDF2 import PdfFileReader

# 读取pdf文件
pdf = PdfFileReader('example.pdf')

# 获取第一页的PageObject对象
page = pdf.getPage(0)

# 使用mediabox参数获取页面的媒体框大小
mediabox = page.mediaBox

# 打印媒体框大小
print("Media box size: ", mediabox)

在这个示例中，我们使用`getPage()`函数获取第一页的`PageObject`对象，然后使用`mediabox`参数获取页面的媒体框大小，并打印出来。

相关问题

raise DeprecationError(msg) PyPDF2.errors.DeprecationError: PdfFileReader is deprecated and was removed in PyPDF2 3.0.0. Use PdfReader instead.

非常抱歉，由于 PyPDF2 库的更新，上面提供的示例代码中的 `PdfFileReader` 已经被弃用并在 PyPDF2 3.0.0 版本中移除了。现在应该使用 `PdfReader` 来替代它。下面是更新后的代码：

import os
from PyPDF2 import PdfReader, PdfWriter

def rotate_pdf_pages(filepath):
    pdf_reader = PdfReader(filepath)
    num_pages = len(pdf_reader.pages)
    
    # 判断最后两页的方向
    last_page = pdf_reader.pages[num_pages - 1]
    second_last_page = pdf_reader.pages[num_pages - 2]
    
    last_page_orientation = last_page.rotate % 360
    second_last_page_orientation = second_last_page.rotate % 360
    
    if last_page_orientation in [0, 180] and second_last_page_orientation in [0, 180]:
        # 最后两页为竖向，需要旋转
        last_page.rotate += 90
        second_last_page.rotate += 90
        
        # 创建新的 PDF 写入器并保存旋转后的文件
        output_pdf = PdfWriter()
        
        for page_num in range(num_pages - 2):
            page = pdf_reader.pages[page_num]
            output_pdf.add_page(page)
        
        output_pdf.add_page(second_last_page)
        output_pdf.add_page(last_page)
        
        # 获取原文件名并在文件名前添加 'rotated_' 前缀
        filename = os.path.basename(filepath)
        new_filename = 'rotated_' + filename
        
        with open(new_filename, 'wb') as output_file:
            output_pdf.write(output_file)
        
        print(f"成功旋转并保存文件: {new_filename}")
    else:
        print("最后两页不需要旋转")

# 遍历文件夹中的所有文件
folder_path = '/path/to/folder'

for filename in os.listdir(folder_path):
    filepath = os.path.join(folder_path, filename)
    
    if os.path.isfile(filepath) and filename.endswith('.pdf'):
        rotate_pdf_pages(filepath)

请确保您已经安装了最新版本的 PyPDF2 库（通过 `pip install PyPDF2` 更新或安装）。同时，将 `'/path/to/folder'` 替换为实际的文件夹路径。

PyPDF2.errors.DeprecationError: PdfFileWriter is deprecated and was removed in PyPDF2 3.0.0. Use PdfWriter instead.

This error message indicates that the PdfFileWriter class in PyPDF2 is no longer supported and has been removed in version 3.0.0. Instead, you should use the PdfWriter class.

To fix this error, you need to update your code to use the new PdfWriter class. Here is an example of how to create a PDF file using the PdfWriter class:

from PyPDF2 import PdfFileReader, PdfWriter

# create a new PdfWriter object
writer = PdfWriter()

# add a new page to the PDF
page = writer.add_blank_page(width=612, height=792)

# write some text on the page
page.add_text("Hello, World!")

# save the PDF to a file
with open("output.pdf", "wb") as out:
    writer.write(out)

Note that you may need to modify your existing code to use the new PdfWriter class, depending on what you are trying to do.