How to modify HTML code inside Python code?

Question

I'm working with Django in order to create a website. I have an function which send e-mail message that is called with a button in the HTML file. I would like to insert a python variable to the HTML code inside of the python function:

import smtplib, ssl, getpass

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

def mailfunctionejex(receiver_email, subject, message, passwordtest):
    port = 465
    smtp_server = 'smtp.gmail.com'
    sender_email = '[email protected]'
    failcounter = 0

    #MIME parameters

    mailmessage = MIMEMultipart()
    mailmessage['Subject'] = subject
    mailmessage['From'] = sender_email
    mailmessage['To'] = receiver_email
    mailmessage['Bcc'] = receiver_email

    #Message content

    html = '''\
        Good morning, the user {sender_email} has send you a message: \n

        {message} #I would to insert in {} the variable sender_email and             #message 

        '''

    #Conversions
    htmlpart = MIMEText(html, 'html')

    mailmessage.attach(htmlpart)


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Juan C · Accepted Answer · 2019-08-12 16:58:32Z

1

This is just a string like any other one, so this should do (I added an f before the string to tell Python it's a format string):

html = f'''\
        Good morning, the user {sender_email} has send you a message: \n

        {message}  

        '''

If this doesn't work, you can go the old way:

html = 'Good morning, the user'+ sender_email+ 'has send you a message: \n'

        +message

answered Aug 12, 2019 at 16:58

Juan C

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2 Comments

ShadowRanger Over a year ago

If f-strings aren't an option, I'd suggest using str.format before going for str concatenation, e.g. 'Good morning, the user {} has send you a message:\n{}'.format(sender_email, message) or the f-string-like 'Good morning, the user {sender_email} has send you a message:\n{message}'.format_map(locals()). String concatenation involves many temporary strings (it's a Schlemiel the Painter's Algorithm), requires all inputs to already be str (where str.format will stringify implicitly), and is uglier (subjective opinion).

Juan C Over a year ago

I'm glad it did !

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