def __init__(self, buffer_or_path):
self._path = None<EOL>self._path, buffer = to_buffer(buffer_or_path)<EOL>with buffer as f:<EOL><INDENT>self._raw_environments, self._raw_variables_info, self._dfs = parse_eso(f)<EOL><DEDENT>self._start_year = None<EOL>
Parameters
----------
buffer_or_path

Initially, standard_output will have tuple instants (using 'year', 'month', 'day', 'hour', 'minute' columns,
    depending on given frequency). It is possible to change to datetime mode later.