django - 另一个 Django “应用程序尚未加载”
问题描述
我对 django 和 python 都很陌生,而且我也遇到了一个我不明白的错误。runserver 命令有效,我可以在 localhost 上输入我的网站。但是外壳不知何故坏了。据我所知,我在 Conda 虚拟环境中使用 PyCharm。我正在使用mac os high sierra。编辑:也使用 Postgres。
尝试导入模型时出错
Python 3.6.5 |Anaconda, Inc.| (default, Apr 26 2018, 08:42:37)
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from catalog.models import Routines
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/fridalarsson/PycharmProjects/hapionline6/catalog/models.py", line 3, in <module>
from senders.models import Senders
File "/Users/fridalarsson/PycharmProjects/hapionline6/senders/models.py", line 4, in <module>
class Senders(models.Model):
File "/Users/fridalarsson/anaconda3/lib/python3.6/site-packages/django/db/models/base.py", line 100, in __new__
app_config = apps.get_containing_app_config(module)
File "/Users/fridalarsson/anaconda3/lib/python3.6/site-packages/django/apps/registry.py", line 244, in get_containing_app_config
self.check_apps_ready()
File "/Users/fridalarsson/anaconda3/lib/python3.6/site-packages/django/apps/registry.py", line 127, in check_apps_ready
raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.
有问题的模型如下所示:
from __future__ import unicode_literals
from django.db import models
from senders.models import Senders
class Routines(models.Model):
routine_id = models.AutoField(primary_key=True)
sender_id = models.ForeignKey(Senders, on_delete=models.CASCADE, default=1)
in_routine = models.CharField(max_length=20)
out_routine = models.CharField(max_length=20)
mail_class = models.CharField(max_length=5)
last_change = models.DateTimeField(auto_now=True)
def __int__(self):
return self.routine_id
另一个奇怪的是,如果我使用 PyCharm shell 而不是常规的“mac os”终端,它会以如下错误消息开头:
/Users/fridalarsson/.conda/envs/hapionline6/bin/python /Applications/PyCharm.app/Contents/helpers/pydev/pydevconsole.py 63555 63556
import sys; print('Python %s on %s' % (sys.version, sys.platform))
import django; print('Django %s' % django.get_version())
sys.path.extend(['/Users/fridalarsson/PycharmProjects/hapionline6', '/Applications/PyCharm.app/Contents/helpers/pycharm', '/Applications/PyCharm.app/Contents/helpers/pydev'])
if 'setup' in dir(django): django.setup()
import django_manage_shell; django_manage_shell.run("/Users/fridalarsson/PycharmProjects/hapionline6")
PyDev console: starting.
Python 3.6.6 |Anaconda, Inc.| (default, Jun 28 2018, 11:07:29)
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
Django 2.0.5
Traceback (most recent call last):
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/db/backends/postgresql/base.py", line 20, in <module>
import psycopg2 as Database
File "/Applications/PyCharm.app/Contents/helpers/pydev/_pydev_bundle/pydev_import_hook.py", line 19, in do_import
module = self._system_import(name, *args, **kwargs)
ModuleNotFoundError: No module named 'psycopg2'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<input>", line 6, in <module>
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/apps/registry.py", line 112, in populate
app_config.import_models()
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/apps/config.py", line 198, in import_models
self.models_module = import_module(models_module_name)
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/Applications/PyCharm.app/Contents/helpers/pydev/_pydev_bundle/pydev_import_hook.py", line 19, in do_import
module = self._system_import(name, *args, **kwargs)
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/contrib/auth/base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/db/models/base.py", line 114, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/db/models/base.py", line 315, in add_to_class
value.contribute_to_class(cls, name)
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/db/models/options.py", line 205, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/db/__init__.py", line 33, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/db/utils.py", line 202, in __getitem__
backend = load_backend(db['ENGINE'])
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/db/utils.py", line 110, in load_backend
return import_module('%s.base' % backend_name)
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/Users/fridalarsson/.conda/envs/hapionline6/lib/python3.6/site-packages/django/db/backends/postgresql/base.py", line 24, in <module>
raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: No module named 'psycopg2'
如果有人可以帮助我将不胜感激!
解决方案
另一种解决方案是重新安装 psycopg 。
pip install --global-option=build_ext \
--global-option="-I/usr/local/opt/openssl/include" \
--global-option="-L/usr/local/opt/openssl/lib" psycopg2
出于某种原因,这行得通
推荐阅读
- php - 使用 PHP CS Fixer 删除导入之间的多余行
- system-verilog - VCS 工具在 edaplayground 上使用 uvm_hdl_deposit 时出错
- c++ - C++ 中的复杂性分析
- html - 如何修复 flexbox 偏移项目
- ios - SwiftUI 多轮选择器触摸边界偏移和崩溃 iOS 15
- vue.js - 我可以设置 503 页面的样式吗?
- node.js - node js上传图片并上传到ftp:适用于一张但不是两张图片
- angular - 使用特定模块时 ag-grid-enterprise 类型的位置?
- angularjs - 自上一版 chrome (94) 以来的 innerHeight 中的错误
- spring-boot - 已部署的 Spring Boot 应用程序的 spring-boot-logger.log 文件位置