错误:没有名为psycopg2.extensions的模块-Error:Nomodulenamedpsycopg2.extensions

117  

The first thing to do is to install the dependencies.

首先要做的是安装依赖项。

sudo apt-get build-dep python-psycopg2

After that go inside your virtualenv and use

然后进入你的虚拟环境中使用

pip install psycopg2 

These two commands should solve the problem.

这两个命令应该可以解决这个问题。

5  

first install apt-get install python-setuptools

首先安装apt-get install python-setuptools

then try easy_install psycopg2

然后试着easy_install psycopg2

4  

This is what helped me on Ubuntu if your python installed from Ubuntu installer. I did this after unsuccessfully trying 'apt-get install' and 'pip install':

如果您的python是在Ubuntu安装程序中安装的，这对我有帮助。我在尝试了“apt-get install”和“pip安装”之后做了这个:

In terminal:

在终端:

sudo synaptic

then in synaptic searchfield write

然后在突触搜索框中写

psycopg2

choose

选择

python-psycopg2

mark it for installation using mouse right-click and push 'apply'. Of course, if you don't have installed synaptic, then first do:

使用鼠标右键单击并按“应用”将其标记为安装。当然，如果你没有安装synaptic，那么首先要做的是:

sudo apt-get install synaptic

4  

I installed it successfully using these commands:

我使用以下命令成功安装:

sudo apt-get install libpq-dev python-dev
pip install psycopg2

2  

In python 3.4, while in a virtual environment, make sure you have the build dependencies first:

在python 3.4中，在虚拟环境中，请确保您首先具有构建依赖项:

sudo apt-get build-dep python3-psycopg2

Then install it:

然后安装它:

pip install psycopg2 

1  

It seems that you need gcc-4.0, and it would be helpful to specify your OS type and version.

您似乎需要gcc-4.0，指定您的OS类型和版本会很有帮助。

Maybe this question will help you a bit: Installing GCC to Mac OS X Leopard without installing Xcode

也许这个问题会对您有所帮助:在Mac OS X Leopard中安装GCC而不安装Xcode

Update

更新

I'm a Windows user, so I can't test your setup, but a quick google pointed to some more links:

我是一个Windows用户，所以我不能测试你的设置，但是一个简单的谷歌指向更多的链接:

• http://hardlifeofapo.com/psycopg2-and-postgresql-9-1-on-snow-leopard/
• http://hardlifeofapo.com/psycopg2-and-postgresql-9-1-on-snow-leopard/
• Cannot install psycopg2 on OSX 10.6.7 with XCode4
• 不能使用XCode4在OSX 10.6.7上安装psycopg2。

1  

I encountered the No module named psycopg2.extensions error when trying to run pip2 install psycopg2 on a Mac running Mavericks (10.9). I don't think my stack trace included a message about gcc, and it also included a hint:

我遇到了名为psycopg2的No模块。试图在运行Mavericks的Mac上运行pip2安装psycopg2时发生扩展错误(10.9)。我不认为我的堆栈跟踪包含关于gcc的消息，它还包含一个提示:

Error: pg_config executable not found.

Please add the directory containing pg_config to the PATH
or specify the full executable path with the option:

    python setup.py build_ext --pg-config /path/to/pg_config build ...

or with the pg_config option in 'setup.cfg'.

I looked for the pg_config file in my Postgres install and added the folder containing it to my path: /Applications/Postgres.app/Contents/Versions/9.4/bin. Your path may be different, especially if you have a different version of Postgres installed - I would just poke around until you find the bin/ folder. After doing this, the installation worked.

我在我的Postgres安装中查找了pg_config文件，并将包含该文件的文件夹添加到我的路径:/Applications/ postgre .app/ content / version /9.4/bin中。你的路径可能是不同的，特别是如果你安装了不同版本的Postgres——我只是在你找到bin/文件夹之前闲逛。在这样做之后，安装工作了。

1  

try this:
sudo pip install -i https://testpypi.python.org/pypi psycopg2==2.7b2
.. this is especially helpful if you're running into egg error

试试这个:sudo pip安装- https://testpypi.python.org/pypicopg2 =2.7b2。如果您遇到鸡蛋错误，这将非常有用

on aws ec2 instances if you run into gcc error; try this
1. sudo yum install gcc python-setuptools python-devel postgresql-devel
2. sudo su -
3. sudo pip install psycopg2

在aws ec2实例上，如果您遇到gcc错误;试试这个1。sudo yum安装了gcc -setuptools python-devel postgresql-devel 2。sudo su - 3。sudo pip安装psycopg2

1  

For Django 2 and python 3 install psycopg2 using pip3 :

对于Django 2和python 3，使用pip3安装psycopg2:

pip3 install psycopg2

1  

pip install psycopg2-binary

The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: http://initd.org/psycopg/docs/install.html#binary-install-from-pypi.

psycopg2轮包将从2.8版本中重新命名;为了从二进制文件继续安装，请使用“pip安装psycopg2-binary”。详情参见:http://initd.org/psycopg/docs/install.html # binary-install-from-pypi。

0  

I used the extension after only importing psycopg2:

我在只导入psycopg2后使用了扩展:

import psycopg2

...

psycopg2.extensions.AsIs(anap[i])

0  

you can install gcc for macos from https://github.com/kennethreitz/osx-gcc-installer
after instalation of gcc you'll be able to install psycopg with easy_install or with pip

您可以从https://github.com/kennethreitz/osx-gcc-installer为macos安装gcc，在安装gcc之后，您将能够使用easy_install或pip安装psycopg

0  

Check if you have installed psycopg2 if not

检查是否安装了psycopg2

sudo apt-get install psycopg2

Install the dependencies.

安装的依赖关系。

sudo apt-get build-dep python-psycopg2

These two commands should solve the problem.

这两个命令应该可以解决这个问题。