[Tutor] Path?

[Adam Bark]

On 14 July 2010 17:41, Jim Byrnes <jf_byrnes at comcast.net> wrote:

> Adam Bark wrote:
>
>> On 14 July 2010 02:53, Jim Byrnes<jf_byrnes at comcast.net>  wrote:
>>
>>  Adam Bark wrote:
>>>
>>> <snipped some old stuff>
>>>
>>>
>>>  If I use the terminal to start the program it has no problem using the
>>>
>>>>  file.  There are multiple files in multiple directories so I was
>>>>>>> looking
>>>>>>> for
>>>>>>> a way to just double click them and have them run.  If it turns out
>>>>>>> that
>>>>>>> I
>>>>>>> must make changes to or for each of the files it will be easier to
>>>>>>> just
>>>>>>> keep
>>>>>>> using the terminal.  I've only been using Ubuntu for a few months so
>>>>>>> I
>>>>>>> was
>>>>>>> surprised that the program could not see a file that is in the same
>>>>>>> directory.
>>>>>>>
>>>>>>> Regards,  Jim
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> The problem is ubuntu doesn't run the script from the directory it's
>>>>>> in
>>>>>> so
>>>>>> it's looking for wxPython.jpg somewhere else.
>>>>>>
>>>>>>
>>>>>>  OK, I mistakenly thought that double-clicking on file in Nautilus
>>>>>> would
>>>>>>
>>>>> take care of the path info.
>>>>>
>>>>> In my reply above I also mentioned that I tried by dropping it on a
>>>>> Launcher on the top panel and that the command the launcher uses is
>>>>> usr/bin/python2.6.  Is there a way that the command can be changed so
>>>>> that
>>>>> it will look in the same directory the python script is in for any file
>>>>> it
>>>>> needs?
>>>>>
>>>>> Thanks,  Jim
>>>>>
>>>>>
>>>>
>>>> Not sure if you got my previous email but you could try writing the bash
>>>> script I posted (with the $1 line to get the path) and setting that as
>>>> your
>>>> launcher, I think it should work.
>>>>
>>>> Let me know if you didn't get it or it doesn't work.
>>>>
>>>> HTH,
>>>> Adam.
>>>>
>>>>
>>>>  I got it, got sidetracked and then forgot to look at it again.  Thanks
>>> for
>>> reminding me.  Your idea works, but with one little downside.  The
>>> directories I am working with are chapters in a book.  So as I move from
>>> chapter to chapter I will need to change the bash script, but this seems
>>> to
>>> be less typing than using the terminal.
>>>
>>>
>>> Thanks,  Jim
>>>
>>>
>> Ok cool, glad it works. It might be possible to get the path so you don't
>> have to set it each time, try this:
>>
>> #!/bin/bash
>> IFS="/"
>> path=($1)
>> cd $(path[0:#path[*]])
>> python $1
>>
>>
>> # Warning, I'm not exactly a competent bash programmer so this may not
>> work
>> :-p
>>
>> Let me know if you need a hand to fix it,
>>
>> HTH,
>> Adam.
>>
>>
> I tried the new bash code but when I dropped a file on the launcher it just
> flashed an gave no output.  So I tried running the bash script
> (name=runpython) in a terminal and got this error:
>
> /home/jfb/runpython: line 4: path[0:#path[*]]: command not found
> Python 2.6.5 (r265:79063, Apr 16 2010, 13:57:41)
> [GCC 4.4.3] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>>
>
> I know even less about bash than you do, so I don't where to start to debug
> this.
>
>
> Thanks,  Jim
>
> Ok then, this time it's tested and not just improvised, here we go:

#!/bin/bash

script=$1 # Full path for calling the script later
orig_IFS=$IFS # This is to reset IFS so that "script" is correct (otherwise
has spaces instead of /)
IFS="/"
path=( $1 )
IFS=$orig_IFS
last_ind=${#path[@]} # Works out the length of path
let "last_ind -= 1" # Sets last_ind to index of script name
len_path=${path[@]:0:last_ind} # Gets the path without the script name
let "len_path=${#len_path[0]} + 1" # This gives the length of the script
string upto just before the last /
cd ${script[@]:0:len_path} # cds to the path
python script


As pretty much my first non-trivial bash script it's probably horrible but
it seems to work.

HTH,
Adam.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/tutor/attachments/20100714/f267ed5f/attachment.html>