如何通过 Python 3.5 将 base64 图像嵌入 HTML 电子邮件？答案

【问题标题】：How to embed a base64 image into HTML email via Python 3.5?如何通过 Python 3.5 将 base64 图像嵌入 HTML 电子邮件？
【发布时间】：2020-01-09 18:59:33
【问题描述】：

我正在尝试构建一个嵌入图像 base64 的电子邮件，以便在我的同事打开它时正确显示。我不确定如何从文件中到达那里以及我现在拥有的东西。

这运行得很好，但我无法成功嵌入图像。我需要嵌入 image1.jpg。

import smtplib

from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.image import MIMEImage


# me == my email address
# you == recipient's email address
me = "me@.com"
you = "you@.com"

# Create message container - the correct MIME type is multipart/alternative.
msg = MIMEMultipart('alternative')
msg['Subject'] = "Sent using Python :) "
msg['From'] = me
msg['To'] = you



# Create the body of the message (a plain-text and an HTML version).
text = "This is an HTML body. I would like to embed a base64 image."
html = """\
<html>
    <body>
        <p>This is an HTML body.<br>
           I would like to embed a base64 image.
        </p>
    </body>
</html>
"""

# Record the MIME types of both parts - text/plain and text/html.
part1 = MIMEText(text, 'plain')
part2 = MIMEText(html, 'html')


# Attach parts into message container.
# According to RFC 2046, the last part of a multipart message, in this case
# the HTML message, is best and preferred.
msg.attach(part1)
msg.attach(part2)

# Send the message via local SMTP server.
s = smtplib.SMTP('localhost')
# sendmail function takes 3 arguments: sender's address, recipient's address
# and message to send - here it is sent as one string.
s.sendmail(me, you, msg.as_string())
s.quit()

【问题讨论】：

标签： python html-email mime

【解决方案1】：

我仅使用嵌入在 HTML 文件中的 base64 图像对其进行了测试，但它应该是相同的。

您必须将图像读取为字节，编码为base64，将其转换为字符串，然后在

中使用

  '<img src="data:image/jpeg;base64,' + data_base64 + '">'

在 HTML 文件中嵌入 base64 图像的工作示例：

import base64

data = open('image.jpg', 'rb').read() # read bytes from file
data_base64 = base64.b64encode(data)  # encode to base64 (bytes)
data_base64 = data_base64.decode()    # convert bytes to string

print(data_base64)

#html = '<html><body><img src="data:image/jpeg;base64,' + data_base64 + '"></body></html>' # embed in html
html = '<img src="data:image/jpeg;base64,' + data_base64 + '">' # embed in html
open('output.html', 'w').write(html)

例如encode and decode base64 image

【讨论】：