Using mysql in conjuntion with Sage?

asked 2011-01-30 01:30:41 +0200

William Smythe
21 ●1 ●1 ●3

Hello,

I'm using Ubuntu (new to it), and am really excited about Sage. I can't afford Matlab. I would like to interface Sage/Python with MySql. I've already installed MySql according to this link.

I tried the command import MySQLdb, but it didn't work. The output from my terminal is pasted below.

johndoe@johndoe:~$ python Python 2.6.6 (r266:84292, Sep 15 2010, 15:52:39) [GCC 4.4.5] on linux2 Type "help", "copyright", "credits" or "license" for more information.

import MySQLdb Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named MySQLdb quit Use quit() or Ctrl-D (i.e. EOF) to exit quit() johndoe@johndoe:~$ cd ~/Sage johndoe@johndoe:~/Sage$ ./sage ---------------------------------------------------------------------- | Sage Version 4.6.1, Release Date: 2011-01-11 | | Type notebook() for the GUI, and license() for information. | ---------------------------------------------------------------------- sage: import MySQLdb --------------------------------------------------------------------------- ImportError
Traceback (most recent call last)

/home/johndoe/Sage/<ipython console=""> in <module>()

ImportError: No module named MySQLdb sage: sage:

I believe I have the same problem as discussed here

However, I'm so new to Ubuntu, that I don't quite follow. I followed the instructions and ran

import sys
for path in sys.path:
     print path

I then received the output pasted below.

/home/johndoe/Sage/local/bin
/home/johndoe/Sage/local/lib/python2.6/site-packages/setuptools-0.6c9-py2.6.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/Twisted-9.0.0-py2.6-linux-i686.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/zope.interface-3.6.1-py2.6-linux-i686.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/zope.proxy-3.6.0-py2.6-linux-i686.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/zope.exceptions-3.6.1-py2.6.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/zope.testing-3.9.5-py2.6.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/ZConfig-2.8.0-py2.6.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/zdaemon-2.0.4-py2.6.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/ZODB3-3.7.0-py2.6-linux-i686.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/Pygments-1.3.1-py2.6.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/Jinja2-2.5.5-py2.6.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/Sphinx-1.0.4-py2.6.egg
/home/johndoe/Sage/local/lib/python2.6/site-packages/SQLAlchemy-0.5.8-py2.6.egg
/home/johndoe/Sage/devel/sagenb
/home/johndoe/Sage/local/bin
/home/johndoe/Sage/local/lib/python
/home/johndoe/Sage/local/lib/python26.zip
/home/johndoe/Sage/local/lib/python2.6/plat-linux2
/home/johndoe/Sage/local/lib/python2.6/lib-tk
/home/johndoe/Sage/local/lib/python2.6/lib-old
/home/johndoe/Sage/local/lib/python2.6/lib-dynload
/home/johndoe/Sage/local/lib/python2.6/site-packages
/home/johndoe/Sage/local/lib/python2.6/site-packages/PIL
/home/johndoe/Sage/local/lib/python2.6/site-packages/IPython/Extensions
/home/johndoe/.sage/ipython

However, I don't understand how to use this information to update the PYTHONPATH environment variable or the library path.

Can anyone help? My basic dilemma is how to ... (more)

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answered 2011-01-30 13:04:43 +0200

bryanward
11 ●1

The easiest thing for you may be install MySQL within the SAGE environment. This can be done by downloading the MySQL library for python from http://sourceforge.net/projects/mysql-python/. Then extract it using your favorite GUI tools, or simply:

tar xzvf MySQL*.tar.gz

from wherever you download it to. Then you can install it to your SAGE environment with something as simple as:

sudo sage setup.py install

You can then delete all the MySQL-python related files in your downloads directory; they have been installed in your SAGE path.

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answered 2011-01-30 16:22:55 +0200

William Smythe
21 ●1 ●1 ●3

I downloaded http://sourceforge.net/projects/mysql... and extracted the file. I then pasted the MySQL folder inside of my Sage folder. Then in Sage I typed "sudo sage setup.py install", but it didn't work. The terminal gave me the output below. This shows that MySQL-python-1.2.3 is now located in my Sage folder.

johndoe@johndoe:~/Sage$ ls
Chapter3_2.py  chapter5_1.py  devel     ipython   MySQL-python-1.2.3  sage-README-osx.txt  VERSION.txt
Chapter3.py    COPYING.txt    examples  local     README.txt          spkg
chapter4_1.py  data           Hello.py  Makefile  sage                sudoku?
johndoe@johndoe:~/Sage$

Then I started Sage and entered "sudo sage setup.py install". The output from this is below.

johndoe@johndoe:~/Sage$ sudo sage setup.py install
sudo: sage: command not found
johndoe@johndoe:~/Sage$

What am I doing wrong?

Thanks, William

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