Re: Searching for a file

ke 28.5.2025 klo 1.45 Thomas Passin ([email protected]) kirjoitti:

> On 5/27/2025 10:41 AM, Roland Mueller via Python-list wrote:
> > To get a list of files in a given directory one can use glob.glob and
>
> The OP had a different problem.  He wanted to find a config file of
> known name that could be in one of several locations.
>

This can be done by replacing the star wildcard  the join(dir, '*') with a
filename or filename glob pattern.
>>> tmp_files = []
>>> for dir in ['/tmp', '/var/tmp']:
...     tmp_files += [f for f in glob(join(dir, filename_to_find))  if
isfile(f) ]


>
> > os.path.isfile
> >
> >>>> from os.path import isfile
> >>>> from glob import glob
> >>>> files_in_var_tmp = [f for f in glob('/var/tmp/*') if isfile(f) ]
> >
> > For several directories iterate over the dirs and add the resulting list
> of
> > files.
> >
> >>>> tmp_files = []
> >>>> for dir in ['/tmp', '/var/tmp']:
> > ...     tmp_files += [f for f in glob(dir + '/*')  if isfile(f) ]
> >
> >
> > ti 27.5.2025 klo 17.05 Peter J. Holzer ([email protected]) kirjoitti:
> >
> >> On 2025-05-24 17:18:11 -0600, Mats Wichmann wrote:
> >>> On 5/23/25 16:05, Rob Cliffe via Python-list wrote:
> >>>> On 23/05/2025 18:55, Mats Wichmann wrote:
> >>>>> On 5/22/25 21:04, Rob Cliffe via Python-list wrote:
> >>>>>> It occurs to me that it might be useful if Python provided a
> >>>>>> function to search for a file with a given name in various
> >>>>>> directories (much as the import.import_lib function searches for
> >>>>>> a module in the directories in sys.path).
> >>>>>> This function would perhaps be best placed in the os.path or os
> >> modules.
> >>>>>> To start the ball rolling, I offer this version:
> >>>>> consider: os.walk, glob.glob, Path.glob
> >>>>>
> >>>>>
> >>>> I have.  None of these are appropriate.
> >>>> os.walk iterates *recursively* over a *single* directory and its
> >>>> subdirectories.
> >>>> pathlib.Path.glob so far as I can make out (I have never used pathlib)
> >>>> does much the same.
> >>>> glob.glob (so far as I can make out) does a *wildcard* search for
> >>>> directories matching a *single* pattern.
> >>>> My suggestion needs a *non-recursive* search for a *file* in a *list*
> >> of
> >>>> *non-wildcarded* directories.
> >>>
> >>> They don't give you "search in a list of directories" intrinsically,
> but
> >>> that's simple loop, bailing out on a match, no?
> >>
> >> But they all read directories. For Rob's purpose this isn't necessary.
> >> He just needs to test a fixed number of locations. Reading even one
> >> directory (muss less recursively scanning a whole tree like os.walk
> >> does) is just pointless extra work.
> >>
> >>          hjp
> >>
> >> --
> >>     _  | Peter J. Holzer    | Story must make more sense than reality.
> >> |_|_) |                    |
> >> | |   | [email protected]         |    -- Charles Stross, "Creative writing
> >> __/   | http://www.hjp.at/ |       challenge!"
> >> --
> >> https://mail.python.org/mailman3//lists/python-list.python.org
> >>
>
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