action_page.py

# import the cgi module to access the form data
import cgi

# create a FieldStorage object to hold the form data
form = cgi.FieldStorage()

# get the values of the form fields
name = form.getvalue("name")
email = form.getvalue("email")
phone = form.getvalue("phone")
attachment = form.getvalue("attachment")
subject = form.getvalue("subject")
message = form.getvalue("message")
captcha = form.getvalue("captcha")

# validate the form data and check for errors
# for example, check if the captcha is correct
if captcha != "some text":
    # print an error message and exit
    print("Content-type: text/html\n")
    print("<p>Invalid captcha. Please try again.</p>")
    exit()

# process the form data and send it to a database or an email
# for example, use the smtplib module to send an email
import smtplib
from email.message import EmailMessage

# create an EmailMessage object and set its attributes
msg = EmailMessage()
msg["Subject"] = subject
msg["From"] = email
msg["To"] = "some@example.com"
msg.set_content(message)

# attach the file if any
if attachment:
    # get the filename and content type of the attachment
    filename = attachment.filename
    content_type = attachment.type

    # read the file data and add it as an attachment to the message
    file_data = attachment.file.read()
    msg.add_attachment(file_data, maintype=content_type, subtype="octet-stream", filename=filename)

# create an SMTP object and connect to the mail server
server = smtplib.SMTP("mail.example.com")

# send the message and close the connection
server.send_message(msg)
server.quit()

# print a confirmation message and exit
print("Content-type: text/html\n")
print("<p>Thank you for contacting us. We will get back to you soon.</p>")
exit()