Django模板中的编码问题

我在使用%ifequal s1“some text”%比较Django模板中的字符串和扩展字符时遇到问题。当字符串s1包含ASCII字符>127时,我会在模板呈现中获得异常。我做错什么了?我在应用程序的其余部分使用UTF-8编码,包括数据、模板和Python代码,没有任何问题。

VIEW

def test(request):
    return render_to_response("test.html", {
                                            "s1": "dados",
                                            "s2": "aprovação",
                                            }
                              )

测试HTML

s1={{s1}}<br>
s2={{s2}}<br>

{% ifequal s1 "dados" %}
  s1="dados" is true
{% endifequal %}

{% ifequal s1 "aprovação" %}
  s1="aprovação" is true
{% endifequal %}

{% comment %}
The following two comparions cause the following exception:
Caught an exception while rendering: 'ascii' codec can't decode byte 0xc3 in position 6: ordinal not in range(128)

{% ifequal s2 "dados" %}
  s2="dados" is true
{% endifequal %}

{% ifequal s2 "aprovação" %}
  s2="aprovação" is true
{% endifequal %}
{% endcomment %}

{% ifequal s2 u"dados" %}
  s2="dados" is true
{% endifequal %}

{% comment %}
The following comparison causes the following exception:
Caught an exception while rendering: 'ascii' codec can't encode characters in position 8-9: ordinal not in range(128)
{% ifequal s2 u"aprovação" %}
  s2="aprovação" is true
{% endifequal %}
{% endcomment %}

产量

s1=dados
s2=aprovação
s1="dados" is true