使用python电子邮件库添加不需要的字符解析原始电子邮件

import email
from email.header import decode_header

with open('path/to/raw_email.eml', 'rb') as file:
    raw_email = file.read()

email_message = email.message_from_bytes(raw_email)

subject = email_message['Subject']

from_address = email.utils.parseaddr(email_message['From'])[1]

to_address = email.utils.parseaddr(email_message['To'])[1]

body = ""
if email_message.is_multipart():
    for part in email_message.walk():
        content_type = part.get_content_type()
        if content_type == 'text/plain' or content_type == 'text/html':
            charset = part.get_content_charset()
            if charset is None:
                charset = 'utf-8'
            body = part.get_payload(decode=True).decode(charset)
            break
else:
    content_type = email_message.get_content_type()
    if content_type == 'text/plain' or content_type == 'text/html':
        charset = email_message.get_content_charset()
        if charset is None:
            charset = 'utf-8'
        body = email_message.get_payload(decode=True).decode(charset)

print("主题:", subject)
print("发件人:", from_address)
print("收件人:", to_address)
print("正文:", body)