/snippets/1处的TypeError/

Question

我遵循 wsvincent django rest framewok教程。我已经完成了这里编写的所有操作，但是当我运行localhost/snippets/1/时，它会引发以下异常

代码段处的TypeError/1/

init（）接受1个位置参数，但给出了2个位置参数

如果你知道怎么了，请帮忙

localhost/snippets运行良好。这是回溯

http://dpaste.com/00B8VHB

型号.py

from django.db import models
from pygments.lexers import get_all_lexers
from pygments.styles import get_all_styles

# Create your models here.
LEXERS = [item for item in get_all_lexers() if item[1]]
LANGUAGE_CHOICES = sorted([(item[1][0], item[0]) for item in LEXERS])
STYLE_CHOICES = sorted((item, item) for item in get_all_styles())

class Snippet(models.Model):
    created = models.DateTimeField(auto_now_add=True)
    title = models.CharField(max_length=100, blank=True, default='')
    code = models.TextField()
    linenos = models.BooleanField(default=False)
    language = models.CharField(choices=LANGUAGE_CHOICES, default='python', max_length=100)
    style = models.CharField(choices=STYLE_CHOICES, default='friendly', max_length=100)

    class Meta:
        ordering = ('created',)

    def __str__(self):
        return self.title

序列化程序.py

from rest_framework import serializers
from .models import Snippet, LANGUAGE_CHOICES, STYLE_CHOICES

class SnippetSerializer(serializers.ModelSerializer):

    class Meta:
        model = Snippet
        fields=('id','title','code','linenos','language','style',)

视图.py

from django.shortcuts import render
from rest_framework import generics
from .serializers import SnippetSerializer
from .models import Snippet
# Create your views here.

class SnippetSerializer(generics.ListCreateAPIView):
    queryset = Snippet.objects.all()
    serializer_class=SnippetSerializer

class SnippetDetail(generics.RetrieveUpdateDestroyAPIView):
    queryset = Snippet.objects.all()
    serializer_class=SnippetSerializer

网址.py

from django.urls import path,include
from rest_framework.urlpatterns import format_suffix_patterns
from . import views

urlpatterns=[
path('snippets/',views.SnippetSerializer.as_view()),
path('snippets/<int:pk>/',views.SnippetDetail.as_view()),
]

urlpatterns = format_suffix_patterns(urlpatterns)