os.path.walk() question.

[jschmitt at vmlabs.com]

I came up with this.  Critique welcome!
##--FindFile.py
import os
import sys
import fnmatch


#-----------------------------------------------------------------------
--------------------------
class FoundFileException:
	def __init__( self, fullname ):
		self.fullname = fullname


#-----------------------------------------------------------------------
--------------------------
def callbackfunc( filename, dir, names ):
	for name in names:
		if fnmatch.fnmatch( name, filename ):
			fullname = os.path.abspath( os.path.join( dir,
name ) )
			raise FoundFileException( fullname )
			# - raising an exception forces the search to
stop as soon as any match
			#   is found


#-----------------------------------------------------------------------
--------------------------
def FindFile( filename, dir=os.getcwd() ):
	foundfile = None
	try:
		os.path.walk( dir, callbackfunc, filename )
	except FoundFileException, filefound:
		foundfile = filefound.fullname
	return foundfile


#-----------------------------------------------------------------------
--------------------------
if __name__ == '__main__':
	# if no directory is passed in, assume the current directory
	if ( len(sys.argv) < 3 ):
		directory = os.getcwd()
	else:
		directory = sys.argv[2]
	fullname = FindFile( sys.argv[1], directory )
	if fullname != None:
		print fullname
	else:
		print sys.argv[1], 'is not in', os.path.abspath(
directory )
#-end of file

John

PS Hopefully deja.com doesn't mess up or wrap my posting.

In article <8e55m0$pvl$1 at hammer.msfc.nasa.gov>,
  "Andrew McDowell" <drew.mcdowell at msfc.nasa.gov> wrote:
> I didn't see this question mentioned in any older posts so forgive me
if I'm
> dragging up and old topic...but:
>
> I need to find out if a file exists under a directory hierarchy.
> The hierarchy could be quite large so I don't want to continue
recursing
> through the hierarchy if the file is found one or two directories
down.   Is
> there a way that you can tell os.path.walk() to stop searching?
>
> I suppose I could customize the code, but my first notion was that
someone
> on the group had probably addressed this before.
>
> Any advice would be much appreciated :)
>
> -Drew
>
>


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