我使用 PIP 在 OSX Lion 上安装 psycopg2。但是当我尝试从 python 导入时，出现以下错误：
Python 2.7.1 (r271:86832, Jun 16 2011, 16:59:05)
[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import psycopg2
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Library/Python/2.7/site-packages/psycopg2/__init__.py", line 67, in <module>
from psycopg2._psycopg import BINARY, NUMBER, STRING, DATETIME, ROWID
ImportError: dlopen(/Library/Python/2.7/site-packages/psycopg2/_psycopg.so, 2): Symbol not found: _PQbackendPID
Referenced from: /Library/Python/2.7/site-packages/psycopg2/_psycopg.so
Expected in: flat namespace
in /Library/Python/2.7/site-packages/psycopg2/_psycopg.so
>>>
有谁知道如何解决这一问题？
Thanks!
Mosko
Step 1.
使用 Lion dmg 安装 Mac Ports ( www.macports.org )。
Step 2.
sudo 端口安装 postgresql91
Step 3.
导出 PATH=/opt/local/lib/postgresql91/bin:$PATH
Step 4.
pip 安装 psycopg2
如果在 virtualenv 环境中或者
sudo 端口安装 psycopg2
if not.
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