How to use the predicthq.endpoints.schemas.StringType function in predicthq

class RevokeTokenParams(Model):

    class Options:
        serialize_when_none = False

    client_id = StringType(default=lambda: config.OAUTH2_CLIENT_ID, required=True)
    client_secret = StringType(default=lambda: config.OAUTH2_CLIENT_SECRET, required=True)
    token = StringType(required=True)
    token_type_hint = StringType(choices=('access_token', 'refresh_token'), default='access_token', required=True)


class AccessToken(Model):

    access_token = StringType()
    token_type = StringType()
    scope = StringListType(StringType, separator=" ")
    refresh_token = StringType(serialize_when_none=False)
    expires_in = IntType(serialize_when_none=False)

country = ListType(StringType)
    location_around = ModelType(LocationAround)
    within = StringListType(StringModelType(Area), separator="+")
    place = ModelType(Place)
    relevance = ListType(StringType)
    brand_unsafe = ModelType(BrandUnsafe)
    entity = ModelType(Entity)


class Entities(Model):

    class Options:
        serialize_when_none = True

    entity_id = StringType()
    name = StringType()
    type = StringType()
    formatted_address = StringType()


class Event(Model):

    class Options:
        serialize_when_none = True

    id = StringType()
    title = StringType()
    description = StringType()
    start = DateTimeType()
    end = DateTimeType()
    timezone = StringType()

class RevokeTokenParams(Model):

    class Options:
        serialize_when_none = False

    client_id = StringType(default=lambda: config.OAUTH2_CLIENT_ID, required=True)
    client_secret = StringType(default=lambda: config.OAUTH2_CLIENT_SECRET, required=True)
    token = StringType(required=True)
    token_type_hint = StringType(choices=('access_token', 'refresh_token'), default='access_token', required=True)


class AccessToken(Model):

    access_token = StringType()
    token_type = StringType()
    scope = StringListType(StringType, separator=" ")
    refresh_token = StringType(serialize_when_none=False)
    expires_in = IntType(serialize_when_none=False)

formatted_address = StringType()


class Event(Model):

    class Options:
        serialize_when_none = True

    id = StringType()
    title = StringType()
    description = StringType()
    start = DateTimeType()
    end = DateTimeType()
    timezone = StringType()
    duration = IntType()
    category = StringType()
    labels = ListType(StringType())
    country = StringType()
    rank = IntType()

    # `local_rank`, `aviation_rank`, and `phq_attendance` are paid features.
    # They will only show up in your response body if you
    # have subscribed to them.
    local_rank = IntType()
    aviation_rank = IntType()
    phq_attendance = IntType()

    entities = ListType(ModelType(Entities))
    location = GeoJSONPointType()
    place_hierarchies = ListType(ListType(StringType()))
    scope = StringType()
    relevance = FloatType()

class SignalID(Model):

    id = StringType(required=True)


class Signal(Model):

    class Options:
        serialize_when_none = True
        roles = {
            "create": whitelist("name", "country", "dimensions"),
            "update": blacklist("created_at", "updated_at")
        }

    id = StringType()
    name = StringType(required=True)
    country = StringType(max_length=2, min_length=2, required=True)
    dimensions = ListType(ModelType(Dimension), default=[])
    created_at = DateTimeType()
    updated_at = DateTimeType()

    def add_dimension(self, dimension_name, dimension_type):
        self.dimensions.append(Dimension({"name": dimension_name, "type": dimension_type}))

    def remove_dimension(self, dimension_name):
        self.dimensions = [dimension for dimension in self.dimensions if dimension.name != dimension_name]

    def save(self, endpoint=None):
        if endpoint is not None:
            self._endpoint = endpoint
        if self.id:
            return self._endpoint.update(self)

from predicthq.endpoints.schemas import Model, StringType, DateTimeType, ModelType


class Industry(Model):

    id = StringType()
    name = StringType()


class Account(Model):

    id = StringType()
    name = StringType()
    description = StringType()
    industry = ModelType(Industry)
    created_at = DateTimeType()
    updated_at = DateTimeType()

class Event(Model):

    class Options:
        serialize_when_none = True

    id = StringType()
    title = StringType()
    description = StringType()
    start = DateTimeType()
    end = DateTimeType()
    timezone = StringType()
    duration = IntType()
    category = StringType()
    labels = ListType(StringType())
    country = StringType()
    rank = IntType()

    # `local_rank`, `aviation_rank`, and `phq_attendance` are paid features.
    # They will only show up in your response body if you
    # have subscribed to them.
    local_rank = IntType()
    aviation_rank = IntType()
    phq_attendance = IntType()

    entities = ListType(ModelType(Entities))
    location = GeoJSONPointType()
    place_hierarchies = ListType(ListType(StringType()))
    scope = StringType()
    relevance = FloatType()
    state = StringType()

from predicthq.endpoints.schemas import Model, StringType, DateTimeType, ModelType


class Industry(Model):

    id = StringType()
    name = StringType()


class Account(Model):

    id = StringType()
    name = StringType()
    description = StringType()
    industry = ModelType(Industry)
    created_at = DateTimeType()
    updated_at = DateTimeType()

class Options:
        serialize_when_none = False

    id = ListType(StringType)
    q = StringType()
    label = ListType(StringType)
    category = ListType(StringType)
    start = ModelType(DateTimeRange)
    start_around = ModelType(DateAround)
    end = ModelType(DateTimeRange)
    end_around = ModelType(DateAround)
    active = ModelType(DateTimeRange)
    updated = ModelType(DateTimeRange)
    state = StringType(choices=('active', 'deleted'))
    deleted_reason = StringType(choices=('cancelled', 'duplicate', 'invalid', 'postponed'))
    rank = ModelType(IntRange)
    rank_level = ListType(IntType(min_value=1, max_value=5))

    # `local_rank`, `aviation_rank`, and `phq_attendance` are paid features.
    # If you haven't subscribed to a paid feature, using it as a
    # search param will have no effect on your search results.
    local_rank = ModelType(IntRange)
    local_rank_level = ListType(IntType(min_value=1, max_value=5))
    aviation_rank = ModelType(IntRange)
    aviation_rank_level = ListType(IntType(min_value=1, max_value=5))
    phq_attendance = ModelType(IntRange)

    country = ListType(StringType)
    location_around = ModelType(LocationAround)
    within = StringListType(StringModelType(Area), separator="+")
    place = ModelType(Place)