mj...@iol.pt wrote:
<div class="moz-text-flowed" style="font-family: -moz-fixed">I'm
wondering if I must save a file to memory before opening it. By
opening I mean displaying it to the user.
I have a BLOB field in a db and I have managed to read the blob into a
binary fileobject. I've also managed to write it to disk and then I
open it by doubleclicking on it. But I was wondering:
1. How to open the file directly from code (and not by double clicking):
I'm aware of os.startfile on Win by I'm on a Mac now, so I rather have
a cross-platform way of accomplishing this.
2. If there is any Python module that takes care of saving and
cleaning temp files in an OS transparent way?
Txs,
Miguel
You don't say what this binary data is. Is there a specific program
that should be launched to "display it to the user" ? Or do you have to
keep this general?
If you know what the necessary program is, you could use subprocess
module to launch it. But I don't know enough about the Mac to know how
to do the Mac equivalent of os.startfile
As for avoiding the use of a file, that depends entirely on the program
you're launching. Some programs can be told to get their data from
stdin. If that's the case, there's a way to provide stdin directly from
Python, using subprocess.
As for temporary files, consider tempfile module. I haven't used it, but
it looks promising.
HTH,
DaveA
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