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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 validate_new_email(email):
 """Validates a "new" email address by checking if it is already used by other users."""

    email = normalize_email(email)
    User = get_user_model()  # noqa
    if User.objects.filter(email=email).exists():
        raise ValidationError('The given email address is already registered.')