我是Python和Django的新手。
我正在使用PostgreSQL数据库引擎后端配置一个Django项目,但在每个数据库操作上都会遇到错误。例如,当我运行manage.py syncdb
时,我得到:
C:\xampp\htdocs\djangodir>python manage.py syncdb
Traceback (most recent call last):
File "manage.py", line 11, in <module>
execute_manager(settings)
File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line
438, in execute_manager
utility.execute()
File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line
379, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line
261, in fetch_command
klass = load_command_class(app_name, subcommand)
File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line
67, in load_command_class
module = import_module('%s.management.commands.%s' % (app_name, name))
File "C:\Python27\lib\site-packages\django\utils\importlib.py", line 35, in im
port_module
__import__(name)
File "C:\Python27\lib\site-packages\django\core\management\commands\syncdb.py"
, line 7, in <module>
from django.core.management.sql import custom_sql_for_model, emit_post_sync_
signal
File "C:\Python27\lib\site-packages\django\core\management\sql.py", line 6, in
<module>
from django.db import models
File "C:\Python27\lib\site-packages\django\db\__init__.py", line 77, in <modul
e>
connection = connections[DEFAULT_DB_ALIAS]
File "C:\Python27\lib\site-packages\django\db\utils.py", line 92, in __getitem
__
backend = load_backend(db['ENGINE'])
File "C:\Python27\lib\site-packages\django\db\utils.py", line 33, in load_back
end
return import_module('.base', backend_name)
File "C:\Python27\lib\site-packages\django\utils\importlib.py", line 35, in im
port_module
__import__(name)
File "C:\Python27\lib\site-packages\django\db\backends\postgresql\base.py", li
ne 23, in <module>
raise ImproperlyConfigured("Error loading psycopg module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading psycopg module: No mo
dule named psycopg
有没有人能告诉我到底是怎么回事?
发布于 2012-08-16 22:12:26
还要确保安装了PostgreSQL开发包。在Ubuntu上,你需要这样做:
$ sudo apt-get install libpq-dev
发布于 2014-09-29 00:52:46
我一步一步地使用:
- sudo apt-get install python-dev
- sudo apt-get install postgresql-server-dev-9.1
- sudo apt-get install python-psycopg2 - Or sudo pip install psycopg2
您可能需要安装一个图形工具来管理您的数据库,为此,您可以这样做:
sudo apt-get install postgresql pgadmin4
之后,您必须更改Postgre用户密码,然后执行以下操作:
- sudo su
- su postgres -c psql postgres
- ALTER USER postgres WITH PASSWORD 'YourPassWordHere';
- \q
在您的settings.py文件中,您需要:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'dbname',
'USER': 'postgres',
'PASSWORD': 'postgres',
'HOST': '',
'PORT': '',
}
}
额外的:
如果想要使用命令行创建数据库,只需执行以下操作:
- sudo su
- su postgres -c psql postgres
- CREATE DATABASE dbname;
- CREATE USER djangouser WITH ENCRYPTED PASSWORD 'myPasswordHere';
- GRANT ALL PRIVILEGES ON DATABASE dbname TO djangouser;
在您的settings.py文件中,您需要:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'dbname',
'USER': 'djangouser',
'PASSWORD': 'myPasswordHere',
'HOST': '',
'PORT': '',
}
}
发布于 2011-03-23 01:20:13
您可以使用以下命令安装“install”:
# sudo easy_install psycopg2
或者,您可以使用pip:
# pip install psycopg2
easy_install和pip包含在ActivePython中,也可以从respective project站点手动安装。
或者,简单地获取pre-built Windows installer。
https://stackoverflow.com/questions/5394331
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