错误：没有名为 psycopg2.extensions django postgresql 的模块

Posted 2023-02-24

【中文标题】错误：没有名为 psycopg2.extensions django postgresql 的模块

【英文标题】：Error: No module named psycopg2.extensions django postgresql

【发布时间】：2013-09-17 02:08:17

【问题描述】：

我想在 Django 中使用 PostgreSQl。我参考了this 教程来安装它，当我运行这个命令时

python manage.py syncdb

我收到以下错误

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 453, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 272, in fetch_command
    klass = load_command_class(app_name, subcommand)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 77, in load_command_class
    module = import_module('%s.management.commands.%s' % (app_name, name))
  File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/syncdb.py", line 8, in <module>
    from django.core.management.sql import custom_sql_for_model, emit_post_sync_signal
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/sql.py", line 9, in <module>
    from django.db import models
  File "/usr/local/lib/python2.7/dist-packages/django/db/__init__.py", line 40, in <module>
    backend = load_backend(connection.settings_dict['ENGINE'])
  File "/usr/local/lib/python2.7/dist-packages/django/db/__init__.py", line 34, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 93, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 27, in load_backend
    return import_module('.base', backend_name)
  File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/postgresql_psycopg2/base.py", line 14, in <module>
    from django.db.backends.postgresql_psycopg2.creation import DatabaseCreation
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/postgresql_psycopg2/creation.py", line 1, in <module>
    import psycopg2.extensions
ImportError: No module named psycopg2.extensions

我也看到了这个question 并执行了这个

sudo apt-get build-dep python-psycopg2
pip install psycopg2 

但是这样做后我仍然遇到同样的错误

【问题讨论】：

pip install psycopg2 真的成功运行了吗？我注意到您的初始命令使用了 sudo，但第二个命令没有。

@Josephpaetz 哈哈！你的正确人。伟大的 。谢谢它刚刚起作用..将其发布为答案

【参考方案1】：

使用 sudo 确保正在安装所有软件包；否则，安装可能会失败，并且您可能不会注意到指示失败是由于权限问题导致的错误消息。

【讨论】：

还有一个帮助，你能给我一个链接，在那里我可以获得 django 应用程序开发的屏幕截图和代码。通过一些示例并尽快学习

我认为通用的答案是穿过Django tutorial 然后从那里走。

我发现它有点慢，而且他们没有举例说明，也没有任何屏幕截图，正在寻找一个类似开发网络应用程序之类的教程，例如 facebook demo