os.path.isdir()

os.path.isdir

asked 2010-09-09 11:30:24 +0200

Mike Witt
565 ●13 ●19 ●36

Should the following work, or am I doing something wrong?

[mike@Vector ~]$ export MIKES_DIR=/home/mike/
[mike@Vector ~]$ /usr/local/sage-4.5.2/sage
----------------------------------------------------------------------
| Sage Version 4.5.2, Release Date: 2010-08-05                       |
| Type notebook() for the GUI, and license() for information.        |
----------------------------------------------------------------------
sage: os.system('echo $MIKES_DIR')
/home/mike/
0
sage: os.path.isdir('/home/mike/')
True
sage: os.path.isdir('$MIKES_DIR')
False

I ask this because isdir() appears to be used in one of the scripts for building ATLAS to test whether you're trying to use system-wide atlas libraries, and I'm having trouble getting that to work.

-Mike

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2 Answers

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answered 2010-09-09 11:42:53 +0200

mvngu
346 ●1 ●1 ●9

You could try this:

[mvngu@sage sage-4.5.3]$ echo $DOT_SAGE
/dev/shm/mvngu/dot_sage
[mvngu@sage sage-4.5.3]$ ./sage
----------------------------------------------------------------------
| Sage Version 4.5.3, Release Date: 2010-09-04                       |
| Type notebook() for the GUI, and license() for information.        |
----------------------------------------------------------------------
sage: os.path.isdir(os.getenv("DOT_SAGE"))
True