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问题:
Installed Django from source (python setup.py install and such), installed MySQLdb from source (python setup.py build, python setup.py install). Using Python 2.4 which came installed on the OS (CentOS 5.5). Getting the following error message after launching the server:
Error loading MySQLdb module: No module named MySQLdb
The pythonpath the debug info provides includes
'/usr/lib/python2.4/site-packages'
and yet, if I ls that directory, I can plainly see
MySQL_python-1.2.3-py2.4-linux-i686.egg
Using the python interactive shell, I can type import MySQLdb and it produces no errors. This leads me to believe it's a Django pathing issue, but I haven't the slightest clue where to start looking as I'm new to both Django and python.
EDIT: And to be a bit more specific, everything is currently running as root. I haven't setup any users yet on the machine, so none exist other than root.
EDITx2: And to be even more specific, web server is Cherokee, and deploying using uWSGI. All installed from source.
回答1:
Have you considered installing MySQLdb from python packages? I would also recommend doing this with pip instead of easy_install.
First you can replace easy_install with pip:
easy_install pip pip install pip --upgrade
And then install Django via PIP:
pip install MySQL-python pip install Django
Typically easy_install is installed already (part of setuptools), while pip is much better. It offers uninstallation options too, and uses flat install directories instead of the EGG files magic. This might resolve some incompatibilities as well.
回答2:
Did you try building the dependencies? This solved it for me on Ubuntu:
sudo apt-get build-dep python-mysqldb pip install MySQLdb-python
回答3:
What worked for me (Linux Mint):
sudo apt-get install libmysqlclient-dev (this was the key for me) pip install mysql-python pip install django
回答4:
Try this if you are using linux:- sudo apt-get install python-mysqldb
windows:- pip install python-mysqldb or easy_install python-mysqldb
Hope this should work
回答5:
You can find out where Python is looking for it's libraries by invoking "python manage.py shell" from the directory base of your Django project. Then do:
import sys import pprint pprint.pprint(sys.path)
And you'll see where the python is pulling libraries from. Also try to do a "import mysql" to see if that's kicking out an error.
Finally, the pathing for the WSGI service is (likely) configured with the uWSGI setup in Cherokee - sorry, I don't know the details of that critter to make suggestions on how to determine where/how it's loading the library path.
回答6:
I was having this same problem, but it was only an issue inside a virtualenv.
What I did to finally fix it was
workon [project_name] pip uninstall django pip install mysql-python pip install django
So making sure you install mysql-python before django seems to work.
This is on a Ubuntu system and using virtualenv.
回答7:
This did the trick for me:
sudo apt-get install python-dev
回答8:
pip install mysql-python
Solved my problem :)
回答9:
in my case, Python was able to access mySQL, but Django (1.6) gave the error: "Error loading MySQLdb module: No module named MySQLdb"
I am on a Macbook OSX (Maverick), by the way.
When I tried to run
pip install mysql-python
I got an error during compilation : "clang: error: unknown argument: ‘-mno-fused-madd’ [-Wunused-command-line-argument-hard-error-in-future]."
The problem, it turns out, is an updated behavior of cc compiler with the new Xcode 5.1. When there is a parameter it doesn't recognize, considers it as a fatal error and quits. The solution to override this behavior can be found here:
http://bruteforce.gr/bypassing-clang-error-unknown-argument.html
回答10:
This issue was the result of an incomplete/incorrect installation of the MySQL for Python adapter.
Specifically, I had to edit the path to the mysql_config file to point to /usr/local/mysql/bin/mysql_config.
Discussed in greater detail in this article:
http://dakrauth.com/blog/entry/python-and-django-setup-mac-os-x-leopard/
