Thanks very much for all the answers given to my question. They help me to think about the problem pythonically.
Best regards David > -----Original Message----- > From: Python-list [mailto:python-list- > bounces+david.aldrich=emea.nec....@python.org] On Behalf Of Peter > Otten > Sent: 03 June 2015 11:59 > To: python-list@python.org > Subject: Re: What sort of data structure to use? > > David Aldrich wrote: > > > Hi > > > > I have written a Python utility that performs a certain activity on > > some predefined sets of files. Here is the outline of what I have written: > > > > # File Set A > > pathA = 'pathA' > > fileListA = ['fileA1.txt', 'fileA2.txt'] > > > > # File Set B > > pathB = 'pathB' > > fileListB = ['fileB1.txt', 'fileB2.txt', 'fileB3.txt'] > > > > myFunc1(pathA, fileListA) > > myFunc2(pathA, fileListA) > > > > myFunc1(pathB, fileListB) > > myFunc2(pathB, fileListB) > > > > I want to add more file sets, so I really want to add the sets to a > > list and iterate over the list, calling myFunc1 & myFunc2 for each item. > > > > My question is: what sort of data structure could I use to organise > > this, given that I want to associate a set of files with each path and > > that, for each set, there is an arbitrary number of files? > > I'd start simple and put (path, files) pairs into a list: > > path_files_pairs = [ > ("pathA", ["fileA1.txt", "fileA2.txt", ...]), > ("pathB", ["fileB1.txt", ...]), > ] > > for path, files in path_files_pairs: > func1(path, files) > func2(path, files) > > You can always add complications later: > > import glob > import os > > class VirtualFileset: > def __init__(self, folder, pattern): > self.folder = folder > self.pattern = pattern > def __iter__(self): > yield self.folder > yield glob.glob(os.path.join(self.folder, self.pattern)) > > path_files_pairs = [ > ("pathA", ["fileA1.txt", "fileA2.txt", ...]), > ("pathB", ["fileB1.txt", ...]), > VirtualFileset("pathC", "*.py"), # all python files in directory "pathC" > ] > > for path, files in path_files_pairs: > func1(path, files) > func2(path, files) > > > -- > https://mail.python.org/mailman/listinfo/python-list > > > Click > https://www.mailcontrol.com/sr/51ZWmSF1P47GX2PQPOmvUmaGI8Tu3yGr > Vrr5Tv1xM3UP2MNyoKSTyt0rIsjE4onM5MUvmWbo6fT3KeH4!zzvzA== to > report this email as spam. -- https://mail.python.org/mailman/listinfo/python-list
