Concatenate a sequence of tuples into one tuple.

Wrapper for contextlib.contextmanager that tracks which methods of PipelineHooks are contextmanagers in CONTEXT_MANAGER_METHODS.

Create a specifier for a continuous contract. Parameters ---------- root_symbol_str : str The root symbol for the

Copies the docstring from one function to another. Parameters ---------- from_ : any The object to copy the docstring from. to

A set-like object of the country codes supplied by this reader.

The country code for this domain. Returns ------- code : str The two-character country iso3166 country code for t

creates trade_count trades for each sid in sids list. first trade will be on sim_params.start_session, and daily thereafter for each sid.

Given a list of tuples of new data we get for each sid on each critical date (when information changes), create a DataFrame that fills that

Create a new registry for an extensible interface. Parameters ---------- interface : type The abstract data type for which t

Generate an ingest function for custom data bundle This function can be used in ~/.zipline/extension.py to register bundle with custom pa

Row labels for rate groups.

Whether or not this column produces currency-denominated data.

Whether or not this loader supports currency-conversions. By default, assume that loaders to not support currency conversions.

Get currencies in which prices are quoted for the requested sids. Assumes that a sid's prices are always quoted in a single currency

Get currencies in which prices are quoted for the requested sids. Assumes that a sid's prices are always quoted in a single currency.

Specification for currency conversions applied for this term.

Compute each asset's weight in the portfolio by calculating its held value divided by the total value of all positions. Each

Get a path relative to the zipline data directory. Parameters ---------- paths : iterable[str] List of requested path pieces

The dataset to which this column is bound.

Takes an iterable of sources, generating namestrings and piping their output into date_sort.

Get the path to the default zipline extension file. Parameters ---------- environ : dict, optional An environment dict to fo

The default implementation for ``populate_initial_workspace``. This function returns the ``initial_workspace`` argument without making any mod

Default shape for methods that build test data.

Surround `content` with the first and last characters of `delimiters`. >>> delimit('[]', "foo") # doctest: +SKIP '[foo]' >>> delimi

A dictionary mapping terms that must be computed before `self` to the number of extra rows needed for those terms.

The number of extra rows needed for each of our inputs to compute this term.

Used to mark a function as deprecated. Parameters ---------- msg : str The message to display in the deprecation warning.

Decorator for API methods that cannot be called from within TradingAlgorithm.before_trading_start. `exception` will be raised if the met

Decorator for marking that a method is a downgrade to a version to the previous version. Parameters ---------- src : int The

Column labels for rate groups.

Construct a Filter indicating whether values are in ``choices``. Parameters ---------- choices : iterable[str or int

Context manager for creating an empty asset finder. See Also -------- empty_assets_db tmp_assets_db tmp_asset_finder