NoReverseMatch: Reverse for 'complete' with arguments '(1,)' not found. 1 pattern(s) tried: ['complete/<todo_id>']

问题

urls.py

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

urlpatterns = [
url('', views.index, name= 'index'),
url('add', views.addTodo, name ='add'),
url('complete/<todo_id>', views.completeTodo, name='complete'),
url('deletecomplete', views.deleteCompleted, name='deletecomplete'),
url('deleteall', views.deleteAll, name='deleteall')
]

views.py( portion of a program)

def completeTodo(request, todo_id):
todo = Todo.objects.get(pk=todo_id)
todo.complete = True
todo.save()

return redirect('index')

index.html(portion of program) I guess this is where the problem is coming.

 <ul class="list-group t20">
                    {% for todo in todo_list %}
                        {% if todo.complete %}
                        <li class="list-group-item todo-completed">{{ todo.text }}</li>
                        {% else %}
                        <a href="{% url 'complete' todo.id %}"><li class="list-group-item">{{ todo.text }}</li></a>
                        {% endif %}
                    {% endfor %}
                </ul>

回答1:

Your regex expression is wrong:

Instead of this:

url('complete/<todo_id>', views.completeTodo, name='complete'),

try this:

url(r'^complete/(?P<todo_id>\d+)$', views.completeTodo, name='complete'),

Or in case you want to use path

path('complete/<int:todo_id>', views.completeTodo, name='complete'),

EDIT

Since you're using Django 1.*, you can't use path() The correct way to set up all your URLs is with url regex expressions

Note

'^': The match must start at the beginning of the string or line.

'$': The match must occur at the end of the string

'\d+': Match all digits

The r at the beginning stands for regex

url(r'^$', views.index, name= 'index'),
url(r'^add$', views.addTodo, name ='add'),
url(r'^complete/(?P<todo_id>\d+)$', views.completeTodo, name='complete'),
url(r'^deletecomplete$', views.deleteCompleted, name='deletecomplete'),
url(r'^deleteall$', views.deleteAll, name='deleteall')

回答2:

Well you wrote a path like:

    url('complete/<todo_id>/', views.completeTodo, name='complete'),

But here <todo_id> is part of the url, it does not denote a variable, etc. it means that there is only one url that will match: /complete/<todo_id>.

In case you use django-2.x, you probably want to use path(..) instead:

    path('complete/<todo_id>', views.completeTodo, name='complete'),

Furthermore in case todo_id is typically an integer, it is advisable to specify the type:

    path('complete/<int:todo_id>', views.completeTodo, name='complete'),

For django-1.x, you can not use such path(..)s, and in that case you need to write a regular expression, like:

    url(r'^complete/(?P<todo_id>[0-9]+)$', views.completeTodo, name='complete'),

来源：https://stackoverflow.com/questions/50767021/noreversematch-reverse-for-complete-with-arguments-1-not-found-1-patter