python - django.core.exceptions.ImproperlyConfigured : Requested setting INSTALLED_APPS, 但设置未配置

Question

我正在尝试使用 Faker 在我的模态中填充数据但我得到了错误。这是我的代码

import os
from faker import Faker
from first_app.models import Topic, Webpage, AccessRecord

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myfirst.settings')
import django
django.setup()
import random

fakegen = Faker()
topics = ['search', 'Social', 'Marketplace', 'News', 'Games']


def add_topic():
    t = Topic.objects.get_or_create(top_name=random.choice(topics))[0]
    t.save()
    return t

def populate(N=5):
    for entry in range(N):
        top=add_topic()
        fake_url=fakegen.url()
        fake_date=fakegen.date()
        fake_name=fakegen.company()

        webpg=Webpage.objects.get_or_create(topic=top,url=fake_url,name=fake_name)[0]

        acc_rec=AccessRecord.objects.get_or_create(name=webpg,date=fake_date)[0]

if __name__=='__main__':
    print('populating script')
    populate(30)
    print('Completed')

我认为错误是由这一行引起的

os.environ.setdefault

但是当我评论这一行时，它不会填充数据

错误如下

django.core.exceptions.ImproperlyConfigured: Requested setting INSTALLED_APPS, but settings are not configured. You must either define the environment variable DJA NGO_SETTINGS_MODULE or call settings.configure() before accessing settings.

Answer 1

您应该在导入模型之前调用django.setup():

import os
import random
from faker import Faker

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myfirst.settings')
import django
django.setup()

from first_app.models import Topic, Webpage, AccessRecord

#...