从电子邮件中读取多个pdf附件，并将所有附件保存为单个pdf文件

import poplib
import email
from email.header import decode_header
from PyPDF2 import PdfMerger

# 邮件服务器信息
pop_server = 'pop.example.com'
username = 'your_username'
password = 'your_password'

# 连接到邮件服务器
server = poplib.POP3(pop_server)
server.user(username)
server.pass_(password)

# 获取邮件总数和列表
num_messages = len(server.list()[1])
messages = [server.retr(i) for i in range(1, num_messages + 1)]

# 创建一个PDF合并器
merger = PdfMerger()

# 遍历每封邮件
for msg in messages:
    # 解析邮件内容
    raw_email = b'\r\n'.join(msg[1])
    email_message = email.message_from_bytes(raw_email)

    # 遍历每个附件
    for part in email_message.iter_attachments():
        # 检查附件类型为PDF
        if part.get_content_type() == 'application/pdf':
            # 保存附件到临时文件夹
            filename = part.get_filename()
            with open(filename, 'wb') as f:
                f.write(part.get_payload(decode=True))

            # 将附件添加到PDF合并器
            merger.append(filename)

# 合并PDF文件
output_filename = 'merged.pdf'
merger.write(output_filename)
merger.close()

# 关闭与邮件服务器的连接
server.quit()

# 保存合并后的PDF文件
# 请根据实际需求修改保存路径
save_path = '/path/to/save/'
final_file_path = save_path + output_filename
# 将合并后的PDF文件移动到指定位置
import shutil
shutil.move(output_filename, final_file_path)