old_contents: from django.conf import settings
  
  import requests
  
  
  def send_email(*args, **kwargs):
  
      sender = kwargs.get("sender")
      receiver = kwargs.get("receiver")
      subject = kwargs.get("subject")
      html = kwargs.get("html")
  
      response = requests.post(
          settings.MAILGUN_API_MESSAGE_URL,
          auth=("api", settings.MAILGUN_API_KEY),
          data={
              "from": sender,
              "to": [
                  receiver,
              ],
              "subject": subject,
              "html": html,
          })
      return response
  
new_contents: from django.conf import settings
  
  import requests
  
  
  def send_email(sender, receiver, subject, html):
      response = requests.post(
          settings.MAILGUN_API_MESSAGE_URL,
          auth=("api", settings.MAILGUN_API_KEY),
          data={
              "from": sender,
              "to": [
                  receiver,
              ],
              "subject": subject,
              "html": html,
          })
      return response
  
subject: refactor send_email utils: change arguments in fucntion explicitly