Python的Django框架中if標簽的相關使用

{% if today_is_weekend %}
 
Welcome to the weekend!
{% endif %}

{% if today_is_weekend %}
 
Welcome to the weekend!
{% else %}
 
Get back to work.
{% endif %}

{% if athlete_list and coach_list %}
 Both athletes and coaches are available.
{% endif %}

{% if not athlete_list %}
 There are no athletes.
{% endif %}

{% if athlete_list or coach_list %}
 There are some athletes or some coaches.
{% endif %}

{% if not athlete_list or coach_list %}
 There are no athletes or there are some coaches.
{% endif %}

{% if athlete_list and not coach_list %}
 There are some athletes and absolutely no coaches.
{% endif %}

{% if athlete_list and coach_list or cheerleader_list %}

{% if athlete_list %}
 {% if coach_list or cheerleader_list %}
 We have athletes, and either coaches or cheerleaders!
 {% endif %}
{% endif %}

{% if athlete_list or coach_list or parent_list or teacher_list %}

{% if athlete_list %}
 
Here are the athletes: {{ athlete_list }}.
{% else %}
 
No athletes are available.
 {% if coach_list %}
 
Here are the coaches: {{ coach_list }}.
 {% endif %}
{% endif %}