testing the data-type of a stream

[David Bear]

I'm writing a filter and would like to be able to do what the Linux
'file' command does, i.e. look at a couple of bytes to see what kind of
data I'm dealing with, the branch based on the type.

I scanned the python library and couldn't find anything that seemed to
approximate this. I know I could do os.popen and call the file
command then parse the output, but would rather not if there is a
regular python module that can do it for me.

any recommendations?

--
David Bear
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"Beware the IP portfolio, everyone will be suspect of trespassing"

[Hans-Joachim Widmaier]

David Bear <da********@asu.edu> wrote in message news:<m3************@moroni.pp.asu.edu>...

I'm writing a filter and would like to be able to do what the Linux
'file' command does, i.e. look at a couple of bytes to see what kind of
data I'm dealing with, the branch based on the type.
[...]
any recommendations?

You might want to take a look at 'magic'
http://www.demonseed.net/~jp/code/magic.py> Reading a few bytes from a
file and passing them on is considered trivial and left as an
exercise. ;-)

Hans-J.