[Python-Dev] file open in python interpreter (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Tue Nov 4 10:25:24 CET 2008

adrian golding wrote:

hi all,

(benjamin and nick thank you!) i have another question to ask something about permissions for the python interpreter. in my earlier post, i was saying i want to measure the python script before it is parsed. what happens is that i will write the measurement of that script file to another file (call is 'measurereq') i have, it gives a Permission denied error. i have modified other programs to do the same measurement (eg, modified Bash to measure .sh files) and it works fine. So i am suspecting it has something to do with the python files. ie, i'm thinking the Permission denied error is not because of i'm unable to write on my 'measurereq' file, but its because i'm unable to measure (read) the python file. any clues? how can i go around this?

You're getting out of python-dev territory now - I'm happy to help with some tips on interpreter internals, but I'm not going to attempt to debug-from-afar a modified version of the interpreter (particularly when the problem relates to file permission issues which are highly OS and file system dependent).

That said, the usual debugging tactic of divide and conquer (e.g. adding trace calls to figure out exactly which step is failing, or just calculating the hash without attempting to write it to disk) will probably be your friend.

Failing that, you might want to try asking for further assistance on comp.lang.python (aka python-list at python.org).

Cheers, Nick.

-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia

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