如何解决 Django 中的 ImproperlyConfigured 错误

我刚开始学习 django，但出现以下错误：

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

运行命令时from myApp.models import Dragons。这是``models.py`：

from django.db import models

# Create your models here.
class Dragons(models.Model):
    rider = models.CharField(max_length=200)
    dragon = models.CharField(max_length=60)

这是INSTALLED_APPS里面settings.py：

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'myApp.apps.MyappConfig',
]

这是àpps.py：

from django.apps import AppConfig


class MyappConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'myApp.apps'

这是文件夹结构：

无效的解决方案：

1. 重新启动服务器。