[Tutor] Zipfile and File manipulation questions.

[Kent Johnson]

Chris Hengge wrote:
> I was using afile.split("/"), but I'm not sure how to impliment it...

Did you see my hint below? Is there something you don't understand about it?

Kent
> 
> if "/" in afile: (for some reason I can't add 'or "\" in afile' on this 
> line)
>                 outfile = open(afile, 'w') # Open output buffer for 
> writing. (to open the file, I can't split here)
>                 outfile.write(zfile.read(afile)) # Write the file. 
> (zfile.read(afile)) wont work if I split here...)
>                 outfile.close() # Close the output file buffer.
> 
> On 10/14/06, *Kent Johnson* <kent37 at tds.net <mailto:kent37 at tds.net>> wrote:
> 
>     Chris Hengge wrote:
>      > Ok, last problem with this whole shebang...
>      >
>      > When I write the file from the zip, if it is in a subfolder, it will
>      > error..
>      > The code below will detect if the file in contained inside a
>     directory
>      > in the zip, but I just want it to write it like it wasn't.
>      > Another words
>      >
>      > Zipfile.zip looks like this
>      > file.ext
>      > file2.ext
>      > folder/
>      >         anotherfile.ext
>      >
>      > file.ext extracts fine, file2.ext extracts file.. but it see's
>     the last
>      > file as folder/anotherfile.ext and it can't write it.. I tried to
>     figure
>      > out how to use .split to get it working right.. but I'm not
>     having any
>      > luck.. Thanks.
>      >
>      > for afile in zfile.namelist(): # For every file in the zip.
>      >         # If the file ends with a needed extension, extract it.
>      >         if afile.lower().endswith('.cap') \
>      >         or afile.lower().endswith('.hex') \
>      >         or afile.lower().endswith('.fru') \
>      >         or afile.lower().endswith('.cfg'):
>      >             if afile.__contains__("/"):
> 
>     This should be spelled
>        if "/" in afile:
> 
>     __contains__() is the method used by the python runtime to implement
>     'in', generally you don't call double-underscore methods yourself.
> 
>     I think you want
>        afile = afile.rsplit('/', 1)[-1]
> 
>     that splits afile on the rightmost '/', if any, and keeps the rightmost
>     piece. You don't need the test for '/' in afile, the split will work
>     correctly whether the '/' is present or not.
> 
>     If you are on Windows you should be prepared for paths containing \ as
>     well as /. You can use re.split() to split on either one.
> 
>     Kent
>      >                 outfile = open(afile, 'w') # Open output buffer for
>      > writing.
>      >                 outfile.write(zfile.read(afile)) # Write the file.
>      >                 outfile.close() # Close the output file buffer.
>      >             else:
>      >                 outfile = open(afile, 'w') # Open output buffer for
>      > writing.
>      >                 outfile.write(zfile.read(afile)) # Write the file.
>      >                 outfile.close() # Close the output file buffer.
> 
> 
>