BaseChainUniverseData

QuantConnect.Data.UniverseSelection.BaseChainUniverseData

BaseChainUniverseData()

BaseChainUniverseData(
    date: Union[datetime, date],
    symbol: Union[Symbol, str, BaseContract],
    csv: str,
)

BaseChainUniverseData(other: BaseChainUniverseData)

Bases: BaseDataCollection, IChainUniverseData

Represents a chain universe. Intended as a base for options and futures universe data.

Signature descriptions:

• Creates a new instance of the BaseChainUniverseData class

• Creates a new instance of the BaseChainUniverseData class as a copy of the given instance

csv_line

csv_line: str

Csv line to get the values from

This codeEntityType is protected.

id

id: SecurityIdentifier

The security identifier of the option symbol

value

value: float

Price of the security

open

open: float

Open price of the security

high

high: float

High price of the security

low

low: float

Low price of the security

close

close: float

Close price of the security

volume

volume: float

Volume value of the security

open_interest

open_interest: float

Open interest value

end_time

end_time: datetime

Time that the data became available to use

symbol

symbol: Symbol

Symbol representation for underlying Security

data_type

data_type: MarketDataType

Market Data Type of this data - does it come in individual price packets or is it grouped into OHLC.

time

time: datetime

Current time marker of this data packet.

price

price: float

As this is a backtesting platform we'll provide an alias of value as price.

ALL_RESOLUTIONS

ALL_RESOLUTIONS: List[Resolution] = ...

A list of all Resolution

This codeEntityType is protected.

DAILY_RESOLUTION

DAILY_RESOLUTION: List[Resolution] = ...

A list of Resolution.DAILY

This codeEntityType is protected.

MINUTE_RESOLUTION

MINUTE_RESOLUTION: List[Resolution] = ...

A list of Resolution.MINUTE

This codeEntityType is protected.

HIGH_RESOLUTION

HIGH_RESOLUTION: List[Resolution] = ...

A list of high Resolution, including minute, second, and tick.

This codeEntityType is protected.

OPTION_RESOLUTIONS

OPTION_RESOLUTIONS: List[Resolution] = ...

A list of resolutions support by Options

This codeEntityType is protected.

is_fill_forward

is_fill_forward: bool

True if this is a fill forward piece of data

underlying

underlying: BaseData

The associated underlying price data if any

filtered_contracts

filtered_contracts: HashSet[Symbol]

Gets or sets the contracts selected by the universe

data

data: List[BaseData]

Gets the data list

default_resolution

default_resolution() -> Resolution

Gets the default resolution for this data and security type

get_source

get_source(
    config: SubscriptionDataConfig,
    date: datetime,
    is_live_mode: bool,
) -> SubscriptionDataSource

Return the URL string source of the file. This will be converted to a stream

Parameters:

Name	Type	Description	Default
config	SubscriptionDataConfig	Configuration object	required
date	datetime	Date of this source file	required
is_live_mode	bool	true if we're in live mode, false for backtesting mode	required

Returns:

Type	Description
SubscriptionDataSource	String URL of source file.

get_universe_full_file_path

get_universe_full_file_path(
    symbol: Symbol, date: datetime
) -> str

Generates the file path for a universe data file based on the given symbol and date. Optionally, creates the directory if it does not exist.

Parameters:

Name	Type	Description	Default
symbol	Symbol	The financial symbol for which the universe file is generated.	required
date	datetime	The date associated with the universe file.	required

Returns:

Type	Description
str	The full file path to the universe data file.

to_symbol

to_symbol() -> Symbol

Gets the symbol of the option

clone

clone() -> BaseData

Return a new instance clone of this object, used in fill forward

Returns:

Type	Description
BaseData	A clone of the current object.

reader

reader(
    config: SubscriptionDataConfig,
    line: str,
    date: datetime,
    is_live_mode: bool,
) -> BaseData

Reader converts each line of the data source into BaseData objects. Each data type creates its own factory method, and returns a new instance of the object each time it is called. The returned object is assumed to be time stamped in the config.ExchangeTimeZone.

Parameters:

Name	Type	Description	Default
config	SubscriptionDataConfig	Subscription data config setup object	required
line	str	Line of the source document	required
date	datetime	Date of the requested data	required
is_live_mode	bool	true if we're in live mode, false for backtesting mode	required

Returns:

Type	Description
BaseData	Instance of the T:BaseData object generated by this line of the CSV.

requires_mapping

requires_mapping() -> bool

Indicates if there is support for mapping

Returns:

Type	Description
bool	True indicates mapping should be used.

data_time_zone

data_time_zone() -> Any

Specifies the data time zone for this data type. This is useful for custom data types

Returns:

Type	Description
Any	The DateTimeZone of this data type.

deserialize_message

deserialize_message(serialized: str) -> Iterable[BaseData]

Deserialize the message from the data server

Parameters:

Name	Type	Description	Default
serialized	str	The data server's message	required

Returns:

Type	Description
Iterable[BaseData]	An enumerable of base data, if unsuccessful, returns an empty enumerable.

is_sparse_data

is_sparse_data() -> bool

Indicates that the data set is expected to be sparse

Returns:

Type	Description
bool	True if the data set represented by this type is expected to be sparse.

should_cache_to_security

should_cache_to_security() -> bool

Indicates whether this contains data that should be stored in the security cache

Returns:

Type	Description
bool	Whether this contains data that should be stored in the security cache.

supported_resolutions

supported_resolutions() -> List[Resolution]

Gets the supported resolution for this data and security type

to_string

to_string() -> str

Formats a string with the symbol and value.

Returns:

Type	Description
str	string - a string formatted as SPY: 167.753.

update

update(
    last_trade: float,
    bid_price: float,
    ask_price: float,
    volume: float,
    bid_size: float,
    ask_size: float,
) -> None

Update routine to build a bar/tick from a data update.

Parameters:

Name	Type	Description	Default
last_trade	float	The last trade price	required
bid_price	float	Current bid price	required
ask_price	float	Current asking price	required
volume	float	Volume of this trade	required
bid_size	float	The size of the current bid, if available	required
ask_size	float	The size of the current ask, if available	required

update_ask

update_ask(ask_price: float, ask_size: float) -> None

Updates this base data with the new quote ask information

Parameters:

Name	Type	Description	Default
ask_price	float	The current ask price	required
ask_size	float	The current ask size	required

update_bid

update_bid(bid_price: float, bid_size: float) -> None

Updates this base data with the new quote bid information

Parameters:

Name	Type	Description	Default
bid_price	float	The current bid price	required
bid_size	float	The current bid size	required

update_quote

update_quote(
    bid_price: float,
    bid_size: float,
    ask_price: float,
    ask_size: float,
) -> None

Updates this base data with new quote information

Parameters:

Name	Type	Description	Default
bid_price	float	The current bid price	required
bid_size	float	The current bid size	required
ask_price	float	The current ask price	required
ask_size	float	The current ask size	required

update_trade

update_trade(last_trade: float, trade_size: float) -> None

Updates this base data with a new trade

Parameters:

Name	Type	Description	Default
last_trade	float	The price of the last trade	required
trade_size	float	The quantity traded	required

__iter__

__iter__() -> Iterator[BaseData]

add

add(new_data_point: BaseData) -> None

Adds a new data point to this collection

Parameters:

Name	Type	Description	Default
new_data_point	BaseData	The new data point to add	required

add_range

add_range(new_data_points: List[BaseData]) -> None

Adds a new data points to this collection

Parameters:

Name	Type	Description	Default
new_data_points	List[BaseData]	The new data points to add	required

get_enumerator

get_enumerator() -> IEnumerator[BaseData]

Returns an IEnumerator for this enumerable Object. The enumerator provides a simple way to access all the contents of a collection.

universe_symbol

universe_symbol(market: str = None) -> Symbol

Creates the universe symbol for the target market

Returns:

Type	Description
Symbol	The universe symbol to use.