Method open

numpy/lib/_datasource.py:487–533

Open and return file-like object. If `path` is an URL, it will be downloaded, stored in the `DataSource` directory and opened from there. Parameters ---------- path : str Local file path or URL to open. mode : {'r', 'w', 'a'}, op

(self, path, mode='r', encoding=None, newline=None)

        return False

    def open(self, path, mode='r', encoding=None, newline=None):
        """
        Open and return file-like object.

        If `path` is an URL, it will be downloaded, stored in the
        `DataSource` directory and opened from there.

        Parameters
        ----------
        path : str
            Local file path or URL to open.
        mode : {'r', 'w', 'a'}, optional
            Mode to open `path`.  Mode 'r' for reading, 'w' for writing,
            'a' to append. Available modes depend on the type of object
            specified by `path`. Default is 'r'.
        encoding : {None, str}, optional
            Open text file with given encoding. The default encoding will be
            what `io.open` uses.
        newline : {None, str}, optional
            Newline to use when reading text file.

        Returns
        -------
        out : file object
            File object.

        """

        # TODO: There is no support for opening a file for writing which
        #       doesn't exist yet (creating a file).  Should there be?

        # TODO: Add a ``subdir`` parameter for specifying the subdirectory
        #       used to store URLs in self._destpath.

        if self._isurl(path) and self._iswritemode(mode):
            raise ValueError("URLs are not writeable")

        # NOTE: _findfile will fail on a new file opened for writing.
        found = self._findfile(path)
        if found:
            _fname, ext = self._splitzipext(found)
            if ext == 'bz2':
                mode.replace("+", "")
            return _file_openers[ext](found, mode=mode,
                                      encoding=encoding, newline=newline)
        else:
            raise FileNotFoundError(f"{path} not found.")


class Repository (DataSource):