Python 配置不正确：设置。数据库配置不正确。请提供发动机值

我正在heroku上建立我的django项目。我一直在遵循文档，但是当我

领班开始时

我收到一个错误，我不能完全弄清楚。我已经设置了我的引擎文件，但它似乎不想工作

完全回溯：

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
    utility.execute()
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/base.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/base.py", line 285, in execute
    output = self.handle(*args, **options)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/base.py", line 415, in handle
    return self.handle_noargs(**options)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 57, in handle_noargs
    cursor = connection.cursor()
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/db/backends/__init__.py", line 160, in cursor
    cursor = self.make_debug_cursor(self._cursor())
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/db/backends/dummy/base.py", line 15, in complain
    raise ImproperlyConfigured("settings.DATABASES is improperly configured. "
django.core.exceptions.ImproperlyConfigured: settings.DATABASES is improperly configured. Please supply the ENGINE value. Check settings documentation for more details.

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.postgresql_psycopg2', 
    'NAME': 'yourdatabasename',
    'HOST': 'localhost',
    'PORT': '',                    
    'USER': 'yourusername',
    'PASSWORD': 'yourpassword',
    }
}

db_from_env = dj_database_url.config()
DATABASES['default'].update(db_from_env)

我似乎不明白这是什么意思，但表面上看不太对

以下是我的设置.py的一部分，我认为可能与此问题有关：

import os
import dj_database_url

ON_HEROKU = os.environ.get('ON_HEROKU')
HEROKU_SERVER = os.environ.get('HEROKU_SERVER')

if ON_HEROKU:

    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.postgresql_psycopg2',
            'NAME': 'postgresql',
        }
    }
else:
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
            'USER': '',
            'PASSWORD': '',
            'HOST': '',                      # Empty for localhost through domain sockets or '127.0.0.1' for localhost through TCP.
            'PORT': '',  
        }
    }


DATABASES['default'] =  dj_database_url.config()

SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

ALLOWED_HOSTS = ['*']

STATIC_URL = '/static/'

# only refers to the location where your static files should end up after running manage.py collectstatic. you shouldn't really need collectstatic) when developing locally
STATIC_ROOT = 'staticfiles'


STATICFILES_DIRS = (    
    os.path.join(BASE_DIR, '../static'),
)

一个能准确解释什么是错的以及发生了什么的答案将非常有帮助。提前谢谢

您正在使用设置

数据库['default']

。无论在这条线之前发生了什么：

DATABASES['default'] =  dj_database_url.config()

当您完全替换数据库配置时，它是没有意义的。

dj_database_url.config（）

从

database_url

环境变量加载数据库配置，如果未设置该变量，则返回

{}

根据错误判断，您根本没有设置

数据库\u URL

。根据

dj\u database\u url.config（）

行前面的代码判断，您根本不应该使用

dj\u database\u url.config（）

函数

如果确实要使用它，请至少构建一个默认URL：

if ON_HEROKU:
    DATABASE_URL = 'postgresql://<postgresql>'
else:
    DATABASE_URL = 'sqlite:///' + os.path.join(BASE_DIR, 'db.sqlite3')

DATABASES = {'default': dj_database_url.config(default=DATABASE_URL)}

如果在\u HEROKU上：
数据库URL='postgresql://'
其他：
DATABASE_URL='sqlite://'+os.path.join（BASE_DIR'db.sqlite3'）
DATABASES={'default'：dj_database_url.config（default=database_url）}

您可以对本地主机使用以下设置

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'DatabaseName',
        'USER': 'DatabaseUserName',
        'PASSWORD': 'DatabaseUserpassword',
        'HOST': 'localhost',
        'PORT': '5432',
    }
}

---

我在运行命令时使用django租户用户时遇到了相同的问题：

python manage.py设置\u dtu\u租户

---

这是因为我的项目文件夹中有一个名为“settings”的文件夹，其级别与我的settings.py相同。删除此文件夹后，问题就消失了。

为什么不试试这个：

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
    utility.execute()
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/base.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/base.py", line 285, in execute
    output = self.handle(*args, **options)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/base.py", line 415, in handle
    return self.handle_noargs(**options)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 57, in handle_noargs
    cursor = connection.cursor()
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/db/backends/__init__.py", line 160, in cursor
    cursor = self.make_debug_cursor(self._cursor())
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/db/backends/dummy/base.py", line 15, in complain
    raise ImproperlyConfigured("settings.DATABASES is improperly configured. "
django.core.exceptions.ImproperlyConfigured: settings.DATABASES is improperly configured. Please supply the ENGINE value. Check settings documentation for more details.

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.postgresql_psycopg2', 
    'NAME': 'yourdatabasename',
    'HOST': 'localhost',
    'PORT': '',                    
    'USER': 'yourusername',
    'PASSWORD': 'yourpassword',
    }
}

db_from_env = dj_database_url.config()
DATABASES['default'].update(db_from_env)

然后应用此命令：

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
    utility.execute()
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/base.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/base.py", line 285, in execute
    output = self.handle(*args, **options)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/base.py", line 415, in handle
    return self.handle_noargs(**options)
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 57, in handle_noargs
    cursor = connection.cursor()
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/db/backends/__init__.py", line 160, in cursor
    cursor = self.make_debug_cursor(self._cursor())
  File "/Users/nir/nirla/venv/lib/python2.7/site-packages/django/db/backends/dummy/base.py", line 15, in complain
    raise ImproperlyConfigured("settings.DATABASES is improperly configured. "
django.core.exceptions.ImproperlyConfigured: settings.DATABASES is improperly configured. Please supply the ENGINE value. Check settings documentation for more details.

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.postgresql_psycopg2', 
    'NAME': 'yourdatabasename',
    'HOST': 'localhost',
    'PORT': '',                    
    'USER': 'yourusername',
    'PASSWORD': 'yourpassword',
    }
}

db_from_env = dj_database_url.config()
DATABASES['default'].update(db_from_env)

---

您的答案似乎与@ApathyBear共享的代码中显示的错误消息不匹配。请把问题再读一遍。