Re: [Tutor] any help with this piece of code
On Thu, 12 May 2005, Richard gelling wrote: > fileToSearchFor = raw_input( "Type in the file name you want to search > for: ") > > if fileToSearchFor in fileList: > print "%s was found" % fileToSearchFor > else: > print "%s was not found" % fileToSearchFor > > Could someone explain to me why this pice of code doesn't work, in that > it works fine up until where I have commented , but when I come to > search the list for a file name, even though I know the filename is in > that particular directory, and is present in the list returned by > 'fileList.append( files )' it always reports that the file is not found. Hi Richard, Ah. TypeError. *grin* At least, a conceptual one. The code above accumulates the fileList with the following: fileList.append( files ) But the problem is that your fileList is a list of lists of file names. What you really want to do is: fileList.extend( files ) to hold a flat list of file names in fileList. The extend() method of a list allows the list to absorb the elements of the other input list. Concretely, your fileList probably looks something like this: [['hello.txt'], ['notes.txt', 'blah.txt']] where you really want to have something like this instead: ['hello.txt', 'notes.txt', 'blah.txt'] Hope this helps! ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] any help with this piece of code
import os fileList = [] subDirectories = [] directories = [] directoryPath = raw_input( "Type in the path you want to start at: " ) for directory,subDirectory, files in os.walk( directoryPath ): directories.append( directory ) subDirectories.append( subDirectory ) fileList.append( files ) for Files in fileList: print Files # It works fine up until here fileToSearchFor = raw_input( "Type in the file name you want to search for: ") if fileToSearchFor in fileList: print "%s was found" % fileToSearchFor else: print "%s was not found" % fileToSearchFor Could someone explain to me why this pice of code doesn't work, in that it works fine up until where I have commented , but when I come to search the list for a file name, even though I know the filename is in that particular directory, and is present in the list returned by 'fileList.append( files )' it always reports that the file is not found. Incidentally if you try this code out, when prompted for the path to start at, don't select a large directory as it takes sometime to run. It may not be very useful I am just curious as to why the file name cannot be found in the list, what am I missing? Richard Gelling ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
