Re: [Tutor] help
On 12/9/06, Kamran Haider <[EMAIL PROTECTED]> wrote: > > Hi > > I have got some python related queries. I am working on an MRes project > which involves a bit of programing in python. Actually, I am using a > python program developed by someone, which gives pairwise genetic > distances between a set of sequences (I don't know how...) and outputs a > simple text file of the following format... > > s1,s2,s3,s4,s5 > 4,7,2,3 > 8,6,4 > 3,6 > 7 > where s1, s2, s3...represent sequences and the second line describes > the pairwise distance between s1 and all other sequences,thid line is > for the distance between s2 and other sequences. > and so on. > 1. I want to read this line into a data structure(most probably by making a > list of lists like [[s1,s2,4],[s1,s2,7],[s1,s3,2] and so on) which gives > each pair and the corresponding pairwise distances. Of course, I would do > this by writing a function that reads this file into a data structure which > gives the all the pairs of sequences and theircorresponding distance values, > but I am not sure how to do this. This is a weighted graph. see http://en.wikipedia.org/wiki/Glossary_of_graph_theory Here is a nice text written for Python: http://www.python.org/doc/essays/graphs.html Should go a long way to solve your second problem as well. Tor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] pyExcelerator and Graphs
Hey friendly users, I have been using pyExcelerator for a short period now, and I'm very satisfied with the results. There is one thing that I just can't do thought, and that is making graphs. I want to add a column (horizontal) type graph. Does anybody know how this can be achieved? Thanks in advance for reading this! Toon Pieton ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] pyExcelerator and Graphs
Toon Pieton wrote: > Hey friendly users, > > I have been using pyExcelerator for a short period now, and I'm very > satisfied with the results. There is one thing that I just can't do > thought, and that is making graphs. I want to add a column (horizontal) > type graph. Does anybody know how this can be achieved? In the readme this is listed as a future feature. Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Getting the directory the program is in
Hey friedly users! I was wondering: how can I get the directory the program is in? For example "C:\Python Programs\Calculator\". Thanks in advance for reading, Toon Pieton ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Getting the directory the program is in
On 12/11/06, Toon Pieton <[EMAIL PROTECTED]> wrote: > Hey friedly users! > > I was wondering: how can I get the directory the program is in? For example > "C:\Python Programs\Calculator\". >>> os.path.split.__doc__ 'Split a pathname. Returns tuple "(head, tail)" where "tail" is\n everything after the final slash. Either part may be empty.' The full pathname is in sys.argv[0] ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Getting the directory the program is in
Toon Pieton wrote: > Hey friedly users! > > I was wondering: how can I get the directory the program is in? For example > "C:\Python Programs\Calculator\". > > Thanks in advance for reading, > Toon Pieton > Slightly hackish and nasty, but seems to do the trick. Someone'll probably suggest a better way, this is just the first thing I could come up with: from os.path import abspath from sys import argv print abspath(argv[0]) ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Getting the directory the program is in
Tor Hildrum wrote: > The full pathname is in sys.argv[0] At least on my system, it only includes the filename if executed from the current directory. Example: [EMAIL PROTECTED]:/$ cd ~ [EMAIL PROTECTED]:~$ cat > test.py from sys import argv print argv[0] [EMAIL PROTECTED]:~$ python test.py test.py [EMAIL PROTECTED]:~$ cd / [EMAIL PROTECTED]:/$ python test.py /home/jordan/test.py [EMAIL PROTECTED]:/$ So, if you _ALWAYS_ need an absolute path, just using sys.argv[0] might not work. Jordan Greenberg ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Getting the directory the program is in
Jordan Greenberg schrieb:
> Slightly hackish and nasty, but seems to do the trick. Someone'll
> probably suggest a better way, this is just the first thing I could come
> up with:
No, IMHO it's perfectly normal and safe practice, though this gets the full
path name of the program. If you want the directory it is in, do this:
from os.path import abspath, dirname
import sys
app_dir = abspath(dirname(sys.argv[0]))
Of course you have to do this before you (or some other code in your program)
do anything siilar to os.chris('/somewhere/else').
Chris
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Re: [Tutor] Getting the directory the program is in
Christopher Arndt schrieb:
> Of course you have to do this before you (or some other code in your program)
> do anything siilar to os.chris('/somewhere/else').
^
That was some freudian slip of my narcissistic mind *LOL*
Of course, I mean:
os.chdir('/somewhere/else')
Chris
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Re: [Tutor] Getting the directory the program is in
On 12/11/06, Jordan Greenberg <[EMAIL PROTECTED]> wrote: > Tor Hildrum wrote: > > The full pathname is in sys.argv[0] > At least on my system, it only includes the filename if executed from > the current directory. Hm, yeah, I thought the full path was standard behavior but I see it's not. I need to go change some code :) ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Video of recent talk by Guido van Rossum
< http://video.google.com/videoplay?docid=-8502904076440714866> Dick Moores ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
