Source code for visions.types.string

from typing import Sequence

import pandas as pd
import pandas.api.types as pdt

from visions.relations import IdentityRelation, TypeRelation
from visions.types.type import VisionsBaseType


def _get_relations(cls) -> Sequence[TypeRelation]:
    from visions.types import Object

    relations = [IdentityRelation(cls, Object)]
    return relations


[docs]class String(VisionsBaseType): """**String** implementation of :class:`visions.types.type.VisionsBaseType`. Examples: >>> x = pd.Series(['rubin', 'carter', 'champion']) >>> x in visions.String True """ @classmethod def get_relations(cls) -> Sequence[TypeRelation]: return _get_relations(cls) @classmethod def contains_op(cls, series: pd.Series) -> bool: # TODO: without the object check this passes string categories... is there a better way? if not pdt.is_object_dtype(series): return False elif series.hasnans: series = series.dropna() if series.empty: return False return all(type(v) is str for v in series)