postgresql Psycopg2 - Django 3.0.5

l7wslrjt 于 2024-01-07 发布在 PostgreSQL

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我试图在我的项目中使用PostgreSQL使用Django进行迁移。但我一直有以下错误：

(agenda_api) C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agendadj\agenda>python manage.py makemigrations
Traceback (most recent call last):
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\db\backends\postgresql\base.py", line 25, in <module>
    import psycopg2 as Database
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\psycopg2\__init__.py", line 51, in <module>
    from psycopg2._psycopg import (                     # noqa
ImportError: DLL load failed while importing _psycopg: No se puede encontrar el módulo especificado.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agendadj\agenda\manage.py", line 21, in <module>
    main()
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agendadj\agenda\manage.py", line 17, in main
    execute_from_command_line(sys.argv)
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\core\management\__init__.py", line 377, in execute
    django.setup()
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\apps\registry.py", line 114, in populate
    app_config.import_models()
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\apps\config.py", line 211, in import_models
    self.models_module = import_module(models_module_name)
  File "C:\Users\felip\AppData\Local\Programs\Python\Python310\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 883, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\contrib\auth\models.py", line 2, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\contrib\auth\base_user.py", line 47, in <module>
    class AbstractBaseUser(models.Model):
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\db\models\base.py", line 121, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\db\models\base.py", line 325, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\db\models\options.py", line 208, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\db\__init__.py", line 28, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\db\utils.py", line 207, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\db\utils.py", line 111, in load_backend
    return import_module('%s.base' % backend_name)
  File "C:\Users\felip\AppData\Local\Programs\Python\Python310\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "C:\Users\felip\OneDrive\Escritorio\Managment\Cursos\Django\agenda_api\lib\site-packages\django\db\backends\postgresql\base.py", line 29, in <module>
    raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: DLL load failed while importing _psycopg: No se puede encontrar el módulo especificado.

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我尝试更改psycopg 2的版本，但它不工作。我遵循这个问题的建议https://github.com/psycopg/psycopg2/issues/1293我尝试卸载psycopg 2并安装psycopg-binary，但我得到其他错误。
这是我的要求.txt：

asgiref==3.2.7
Django==3.0.5
django-model-utils==4.0.0
psycopg2==2.8.5
pytz==2019.3
sqlparse==0.3.1
Unipath==1.1

型

postgresql

来源：https://stackoverflow.com/questions/77646959/psycopg2-django-3-0-5

1条答案

按热度按时间

axr492tv1#

一些用户已经打开了similar issues here，它们都已经关闭了。它们似乎很快就解决了提出的问题，所以你可能想开始浏览一下那里提出的建议。
另外，您似乎正在使用postgresql，如果是这样，请确保您的连接参数在settings.py中正确设置，如下所示：

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql_psycopg2",
        "NAME": "mydatabase",
        "USER": "mydatabaseuser",
        "PASSWORD": "mypassword",
        "HOST": "127.0.0.1",
        "PORT": "5432",
    }
}

字符串

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postgresql Psycopg2 - Django 3.0.5

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