Django在运行时出现Reverse for 'xxx' with no arguments not found.

本人刚学Django，这是一个临时程序，本来想实现通过url查找用户信息，并且在代码片段中添加了跳转链接

urls.py

from . import views
from django.conf.urls import url, include

urlpatterns = [
    url(r'^$',views.index,name='index'),
    url(r'^(?P<name_id>\d+)/$',views.names,name='names'),
]

views.py

from django.shortcuts import render
from .models import Name

# Create your views here.
def index(request):
    name = Name.objects.all()
    context = {'names':name}
    return render(request,'index.html',context)

def names(request, name_id):
    name = Name.objects.get(id=name_id)
    context = {'name':name}
    return render(request,'names.html',context)

index.py

<p>INDEX</p>
<!--这里想通过无序列表将用户名列出来-->
<ul>
    {% for name in names %}
        <!--本来想在此处插入跳转链接的，但是出错-->
        <li><a href="{% url 'testing:names' %}">{{ name }}</a></li>
    {% empty %}
        <li>NOTHING HERE</li>
    {% endfor %}
</ul>

以上就是主要的代码
报错如下：

https://blog.csdn.net/qq_19175749/article/details/80012956