def makemap(filenames, sourcedir, targetdir=None):

    if targetdir is None: targetdir = DEFAULT_TARGETDIR
    return OrderedDict(
        (join(targetdir, f),  join(sourcedir, f)) for f in filenames)
Return an OrderedDict (to preserve script run order) which maps
dataset/ETHPy150Open quaddra/provision/provision/config.py/makemap