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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def send_approved_mail(request, user):
 """ Sends an email to a user once their ``is_active`` status goes from ``False`` to ``True`` when the ``ACCOUNTS_APPROVAL_REQUIRED`` setting is ``True``. """

    context = {"request": request, "user": user}
    subject = subject_template("email/account_approved_subject.txt", context)
    send_mail_template(subject, "email/account_approved",
                       settings.DEFAULT_FROM_EMAIL, user.email,
                       context=context)