django获取from表单multiple-select的值

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html代码

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<!--增加通知人-->
<div class="form-group">
    <select id="notify_users" name="notify_users"
            class="selectpicker show-tick form-control bs-select-hidden" data-name="通知人"
            data-live-search="true" multiple="multiple" data-placeholder="请选择通知人:">
        <option value="is-empty" disabled="" selected="selected">请选择通知人:</option>
        {% for user_info in active_user %}
            <option value="{{ user_info.username }}">{{ user_info.username }}</option>
        {% endfor %}
    </select>
</div>

后端代码

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def func(request):
    notify_users = request.POST.getlist('notify_users')

取值结果

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notify_users<class 'list'>: ['user1', 'user2', 'user3', 'user4', 'user5']