parsers.py 文件源码

def __init__(self, f, engine=None, **kwds):

        self.f = f

        if engine is not None:
            engine_specified = True
        else:
            engine = 'python'
            engine_specified = False

        self._engine_specified = kwds.get('engine_specified', engine_specified)

        if kwds.get('dialect') is not None:
            dialect = kwds['dialect']
            if dialect in csv.list_dialects():
                dialect = csv.get_dialect(dialect)
            kwds['delimiter'] = dialect.delimiter
            kwds['doublequote'] = dialect.doublequote
            kwds['escapechar'] = dialect.escapechar
            kwds['skipinitialspace'] = dialect.skipinitialspace
            kwds['quotechar'] = dialect.quotechar
            kwds['quoting'] = dialect.quoting

        if kwds.get('header', 'infer') == 'infer':
            kwds['header'] = 0 if kwds.get('names') is None else None

        self.orig_options = kwds

        # miscellanea
        self.engine = engine
        self._engine = None

        options = self._get_options_with_defaults(engine)

        self.chunksize = options.pop('chunksize', None)
        self.squeeze = options.pop('squeeze', False)

        # might mutate self.engine
        self.options, self.engine = self._clean_options(options, engine)
        if 'has_index_names' in kwds:
            self.options['has_index_names'] = kwds['has_index_names']

        self._make_engine(self.engine)