擅长:python、mysql、java
<p>你知道吗视图.py你知道吗</p>
<pre><code>def Pyramid(request):
dataset = models.Pyramid.objects.all()
datasett = models.Pyramid.objects.annotate(
sum_men=(
F('men_population_0_4') + F('men_population_5_9')
+ F('men_population_10_14') + F('men_population_15_19')
+ ...
+ F('men_population_90_over')
),
men_population_0_4_perc=(100*F('men_population_0_4') / F('sum_men')),
men_population_5_9_perc=(100*F('men_population_5_9') / F('sum_men')),
...
)
context = {
'dataset': dataset,
'datasett': datasett,
}
return render(request, 'pyramid.html', context)
</code></pre>
<p>你知道吗金字塔.html你知道吗</p>
<pre><code>{% for item in datasett %}
{{ item.sum_men }}
{{ item.men_population_0_4_perc }}
{{ item.men_population_5_9_perc }}
{% endfor %}
</code></pre>