Python 从flask mail can发送的图像'；无法想象

我有一个应用程序，它使用

Flask

和

Flask-mail

。我正试图发送一封附有照片和图片的电子邮件。此图像由用户通过

html

中的表单发送。电子邮件到达，但图像在电子邮件中打开时无法显示

我的代码是：

if request.method == 'POST':
            file = request.files['arch']
            if request.files['arch'].filename != '':
                if file and allowed_file(file.filename):
                    filename = secure_filename(file.filename)
                    file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))

                    fic = open( "uploads/" + file.filename, "r", encoding='utf8', errors='ignore')

                    msg.attach("uploads/" + file.filename, "image/png", fic.read())

        mail.send(msg)

对于html：

<form action="/form" method="POST" enctype="multipart/form-data">
    <input type="file" name="arch" accept="image/*" class="arch">
</form>

---

从第

fic

行开始尝试以下更改

with app.open_resource(UPLOAD_FOLDER) as test:
        msg.attach(UPLOAD_FOLDER, 'image/jpg', test.read())
    mail.send(msg)

---

从第

fic

行开始，尝试以下更改

with app.open_resource(UPLOAD_FOLDER) as test:
        msg.attach(UPLOAD_FOLDER, 'image/jpg', test.read())
    mail.send(msg)