如何在Python 2.7中使用smtplib在電子郵件中設置字符集？

Question

我正在寫一個簡單的驗證smtp發件人。這是我的代碼

SMTPserver, sender, destination = 'smtp.googlemail.com', 'user@gmail.com', ['reciever@gmail.com'] 
    USERNAME, PASSWORD = "user", "password" 

    # typical values for text_subtype are plain, html, xml 
    text_subtype = 'plain' 


    content=""" 
    Hello, world! 
    """ 

    subject="Message Subject" 

    from smtplib import SMTP_SSL as SMTP  # this invokes the secure SMTP protocol (port 465, uses SSL) 
    # from smtplib import SMTP     # use this for standard SMTP protocol (port 25, no encryption) 
    from email.MIMEText import MIMEText 

    try: 
     msg = MIMEText(content, text_subtype) 
     msg['Subject']=  subject 
     msg['From'] = sender # some SMTP servers will do this automatically, not all 

     conn = SMTP(SMTPserver) 
     conn.set_debuglevel(False) 
     conn.login(USERNAME, PASSWORD) 
     try: 
      conn.sendmail(sender, destination, msg.as_string()) 
     finally: 
      conn.close() 

    except Exception, exc: 
     sys.exit("mail failed; %s" % str(exc)) # give a error message 

它工作完美，直到我嘗試發送非ASCII符號（俄羅斯西里爾文）。我應該如何在消息中定義一個字符集以使其以適當的方式顯示？提前致謝！

UPD。我已經改變了我的代碼：

text_subtype = 'text' 
content="<p>Текст письма</p>" 
msg = MIMEText(content, text_subtype) 
msg['From']=sender # some SMTP servers will do this automatically, not all 
msg['MIME-Version']="1.0" 
msg['Subject']="=?UTF-8?Q?Тема письма?=" 
msg['Content-Type'] = "text/html; charset=utf-8" 
msg['Content-Transfer-Encoding'] = "quoted-printable" 
… 
conn.sendmail(sender, destination, str(msg)) 

所以，我第一次spectify text_subtype = '文本'，然後在頭我把一個味精[ '內容類型'] =「text/html的;字符集= UTF -8「字符串。這是對的嗎？

UPDATE最後，我已經解決了我的問題的消息 你應該寫像味精=未便MimeText用於（content.encode（ 'UTF-8'）， '普通'， 'UTF-8'）

Answer 1

from email.header import Header 
from email.mime.multipart import MIMEMultipart 
from email.mime.text import MIMEText 

def contains_non_ascii_characters(str): 
    return not all(ord(c) < 128 for c in str) 

def add_header(message, header_name, header_value): 
    if contains_non_ascii_characters(header_value): 
     h = Header(header_value, 'utf-8') 
     message[header_name] = h 
    else: 
     message[header_name] = header_value  
    return message 

............ 
msg = MIMEMultipart('alternative') 
msg = add_header(msg, 'Subject', subject) 

if contains_non_ascii_characters(html): 
    html_text = MIMEText(html.encode('utf-8'), 'html','utf-8') 
else: 
    html_text = MIMEText(html, 'html')  

if(contains_non_ascii_characters(plain)): 
    plain_text = MIMEText(plain.encode('utf-8'),'plain','utf-8') 
else: 
    plain_text = MIMEText(plain,'plain') 

msg.attach(plain_text) 
msg.attach(html_text) 

這應該給你的文字和標題正確的編碼，無論你的文本是否包含非ASCII：應使用UTF-8

msg = MIMEText(content.encode('utf-8'), text_subtype). 

這裏更多編碼您的郵件文本字符或不是。這也意味着你不會不必要地自動使用base64編碼。

Answer 2

您可能需要使用SMTP頭實現發送不同的字符集，你可以添加以下 -

msg['Content-Type'] = "text/html; charset=us-ascii"

（根據您的需要更改字符集）

Answer 3

你 http://radix.twistedmatrix.com/2010/07/how-to-send-good-unicode-email-with.html