codekingpro/portable-devtools

1import importlib2import inspect3import os.path4 5 6class Data:7    def __init__(self, name):8        self.name = name9        m = importlib.import_module(name)10        f = inspect.getsourcefile(m)11        assert f is not None12        dirname = os.path.dirname(f)13        self.dirname = os.path.abspath(dirname)14 15    def push(self, subpath):16        """17        Change the data object to a path relative to the module.18        """19        dirname = os.path.normpath(os.path.join(self.dirname, subpath))20        ret = Data(self.name)21        ret.dirname = dirname22        return ret23 24    def path(self, path):25        """26        Returns a path to the package data housed at 'path' under this27        module.Path can be a path to a file, or to a directory.28 29        This function will raise ValueError if the path does not exist.30        """31        fullpath = os.path.normpath(os.path.join(self.dirname, path))32        if not os.path.exists(fullpath):33            raise ValueError("dataPath: %s does not exist." % fullpath)34        return fullpath35 36 37pkg_data = Data(__name__).push("..")38