Question

Running OSX 10.6.3

Just updated python to Python 2.6.5 (r265:79359

rebuilt and reinstalled mysqldb (MySQL-python-1.2.3)

rebuilt and reinstalled django (<– should be unrelated. problem seems to be with mysqldb)

I’m getting the following error.

File "<stdin>", line 1, in <module>
File "build/bdist.macosx-10.3-fat/egg/MySQLdb/__init__.py", line 19, in <module>    
File "build/bdist.macosx-10.3-fat/egg/_mysql.py", line 7, in <module>
  File "build/bdist.macosx-10.3-fat/egg/_mysql.py", line 6, in __bootstrap__
ImportError: dlopen(/Users/joshuamerriam/.python-eggs/MySQL_python-1.2.3-py2.6-macosx-10.3-fat.egg-tmp/_mysql.so, 2): Symbol not found: _mysql_affected_rows
  Referenced from: /Users/joshuamerriam/.python-eggs/MySQL_python-1.2.3-py2.6-macosx-10.3-fat.egg-tmp/_mysql.so
  Expected in: dynamic lookup

The error is mentioned here (http://mysql-python.sourceforge.net/FAQ.html) but with no reference as to how to fix it. I’m a bit over my head. Any help?

Answer 1

Since you have already gone done the road of using MacPorts for the MySQL client library, the easiest and least trouble-prone solution long-term is to use as many other components from MacPorts as possible. That is, use python and the the MySQLdb from MacPorts as well. There’s even a Django port available. One tip: on Snow Leopard, the MacPorts Python 2.6 Tkinter pulls in a lot of extra ports that you may not want to bother building. If you don’t anticipate needing Tkinter, you can skip building it:

sudo port install python26 +no_tkinter py26-mysql py26-django

You may also want to install the python_select port and use it to select the default for the /opt/local/bin/python command:

sudo python_select python26

You’ll need to ensure your shell PATH includes the MacPorts bin and Python framework bin directories:

export PATH="/opt/local/Library/Frameworks/Python.framework/Versions/2.6/bin:/opt/local/bin:$PATH"