In my class in models.py I have a field:

names = models.TextField(max_length=40, choices=sektor, default="Adam", verbose_name="Name")

sektor = (
    ("Adam", "Adam"),
    ("Tom", "Tom"),
)

When I change an option in my page, I run the following script

<script type="text/javascript">
        var endpoint = '/call_jquery_sektor/'
        var sektor = []
        $.ajax({
            method: "GET",
            url: endpoint,
            success: function(data){
                sektor = data.sektor
                //loop
                $(sektor).each(function(i) {
                $("#id_names").append("<option>" + sektor[i] + "</option>") //append options
                })
                },
            error: function(error_data){
                console.log("error")
                console.log(error_data)
                }
        })
    </script>

I get all data, writen as two elements of each tuple, in one row. I would like to clear all previous options and when I run script I would get list of all names, each name single time and only 1 in 1 row.

I get:

Adam, Adam, Tom, Tom

I would like to get:

Adam
Tom