prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  No reverse match for rest_framework namespace
  The error for a very strange reason shows when accessing these URLs:
  https://github.com/swcarpentry/amy/blob/develop/api/urls.py#L57
  
  I wasn't able to get rid of it; it's not being used at all, so maybe it should be removed…?
  
  
  </issue>
  <code>
  [start of api/urls.py]
  1 from django.conf.urls import url, include
  2 from rest_framework_nested import routers
  3 from rest_framework.urlpatterns import format_suffix_patterns
  4 
  5 from . import views
  6 
  7 # new in Django 1.9: this defines a namespace for URLs; there's no need for
  8 # `namespace='api'` in the include()
  9 app_name = 'api'
  10 
  11 # routers generate URLs for methods like `.list` or `.retrieve`
  12 router = routers.SimpleRouter()
  13 router.register('reports', views.ReportsViewSet, base_name='reports')
  14 router.register('persons', views.PersonViewSet)
  15 awards_router = routers.NestedSimpleRouter(router, 'persons', lookup='person')
  16 awards_router.register('awards', views.AwardViewSet, base_name='person-awards')
  17 person_task_router = routers.NestedSimpleRouter(router, 'persons',
  18                                                 lookup='person')
  19 person_task_router.register('tasks', views.PersonTaskViewSet,
  20                             base_name='person-tasks')
  21 router.register('events', views.EventViewSet)
  22 tasks_router = routers.NestedSimpleRouter(router, 'events', lookup='event')
  23 tasks_router.register('tasks', views.TaskViewSet, base_name='event-tasks')
  24 todos_router = routers.NestedSimpleRouter(router, 'events', lookup='event')
  25 todos_router.register('todos', views.TodoViewSet, base_name='event-todos')
  26 router.register('hosts', views.HostViewSet)
  27 router.register('airports', views.AirportViewSet)
  28 
  29 urlpatterns = [
  30     url('^$', views.ApiRoot.as_view(), name='root'),
  31     # TODO: turn these export views into ViewSets and add them to the router
  32     url('^export/badges/$',
  33         views.ExportBadgesView.as_view(),
  34         name='export-badges'),
  35     url('^export/instructors/$',
  36         views.ExportInstructorLocationsView.as_view(),
  37         name='export-instructors'),
  38     url('^export/members/$',
  39         views.ExportMembersView.as_view(),
  40         name='export-members'),
  41     url('^events/published/$',
  42         views.PublishedEvents.as_view(),
  43         name='events-published'),
  44     url('^todos/user/$',
  45         views.UserTodoItems.as_view(),
  46         name='user-todos'),
  47 
  48     url('^', include(router.urls)),
  49     url('^', include(awards_router.urls)),
  50     url('^', include(person_task_router.urls)),
  51     url('^', include(tasks_router.urls)),
  52     url('^', include(todos_router.urls)),
  53 ]
  54 
  55 # for login-logout functionality
  56 urlpatterns += [
  57     url(r'^api-auth/',
  58         include('rest_framework.urls', namespace='rest_framework')),
  59 ]
  60 
  61 urlpatterns = format_suffix_patterns(urlpatterns)  # allow to specify format
  62
  [end of api/urls.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/api/urls.py b/api/urls.py
  --- a/api/urls.py
  +++ b/api/urls.py
  @@ -52,10 +52,4 @@
       url('^', include(todos_router.urls)),
   ]
   
  -# for login-logout functionality
  -urlpatterns += [
  -    url(r'^api-auth/',
  -        include('rest_framework.urls', namespace='rest_framework')),
  -]
  -
   urlpatterns = format_suffix_patterns(urlpatterns)  # allow to specify format
  
verification_info: {"golden_diff": "diff --git a/api/urls.py b/api/urls.py\n--- a/api/urls.py\n+++ b/api/urls.py\n@@ -52,10 +52,4 @@\n     url('^', include(todos_router.urls)),\n ]\n \n-# for login-logout functionality\n-urlpatterns += [\n-    url(r'^api-auth/',\n-        include('rest_framework.urls', namespace='rest_framework')),\n-]\n-\n urlpatterns = format_suffix_patterns(urlpatterns)  # allow to specify format\n", "issue": "No reverse match for rest_framework namespace\nThe error for a very strange reason shows when accessing these URLs:\nhttps://github.com/swcarpentry/amy/blob/develop/api/urls.py#L57\n\nI wasn't able to get rid of it; it's not being used at all, so maybe it should be removed\u2026?\n\n", "before_files": [{"content": "from django.conf.urls import url, include\nfrom rest_framework_nested import routers\nfrom rest_framework.urlpatterns import format_suffix_patterns\n\nfrom . import views\n\n# new in Django 1.9: this defines a namespace for URLs; there's no need for\n# `namespace='api'` in the include()\napp_name = 'api'\n\n# routers generate URLs for methods like `.list` or `.retrieve`\nrouter = routers.SimpleRouter()\nrouter.register('reports', views.ReportsViewSet, base_name='reports')\nrouter.register('persons', views.PersonViewSet)\nawards_router = routers.NestedSimpleRouter(router, 'persons', lookup='person')\nawards_router.register('awards', views.AwardViewSet, base_name='person-awards')\nperson_task_router = routers.NestedSimpleRouter(router, 'persons',\n                                                lookup='person')\nperson_task_router.register('tasks', views.PersonTaskViewSet,\n                            base_name='person-tasks')\nrouter.register('events', views.EventViewSet)\ntasks_router = routers.NestedSimpleRouter(router, 'events', lookup='event')\ntasks_router.register('tasks', views.TaskViewSet, base_name='event-tasks')\ntodos_router = routers.NestedSimpleRouter(router, 'events', lookup='event')\ntodos_router.register('todos', views.TodoViewSet, base_name='event-todos')\nrouter.register('hosts', views.HostViewSet)\nrouter.register('airports', views.AirportViewSet)\n\nurlpatterns = [\n    url('^$', views.ApiRoot.as_view(), name='root'),\n    # TODO: turn these export views into ViewSets and add them to the router\n    url('^export/badges/$',\n        views.ExportBadgesView.as_view(),\n        name='export-badges'),\n    url('^export/instructors/$',\n        views.ExportInstructorLocationsView.as_view(),\n        name='export-instructors'),\n    url('^export/members/$',\n        views.ExportMembersView.as_view(),\n        name='export-members'),\n    url('^events/published/$',\n        views.PublishedEvents.as_view(),\n        name='events-published'),\n    url('^todos/user/$',\n        views.UserTodoItems.as_view(),\n        name='user-todos'),\n\n    url('^', include(router.urls)),\n    url('^', include(awards_router.urls)),\n    url('^', include(person_task_router.urls)),\n    url('^', include(tasks_router.urls)),\n    url('^', include(todos_router.urls)),\n]\n\n# for login-logout functionality\nurlpatterns += [\n    url(r'^api-auth/',\n        include('rest_framework.urls', namespace='rest_framework')),\n]\n\nurlpatterns = format_suffix_patterns(urlpatterns)  # allow to specify format\n", "path": "api/urls.py"}]}