In preparation for the incoming changes which no longer push every bar
through the tradesimulation, remove the adjustment of the period's cash on
every pricing change of a held futures asset.
Instead hold the last sale price for each held future either:
- At the end of each peformance period update the last sale prices of
all held futures, so that the pnl for the next period uses values
derived from the cash difference between the end of the two periods.
- When a transaction is processed for the Future, so that the correct
amount is applied to each cash adjustment. (i.e. the cash adjustment
is reset on every change of amount of the Future being held, so that
multiple size and prices do not need to be tracked for the same asset.)
Also, remove now unused dict of payout calculation modifier, since new
calculation reads the value directly off of the asset.
Remove update_last_sale test, since the method no longer returns a cash
value.
Instead of calling a function, where the only parameter is the tracker
object, make it a method, so that the snapshot of position tracker stats
can be more easily called as `pt.stats()`.
In preparation for removal of widespread events, change the split
methods to use params for sid and cost, instead of an event, for
compatibility with lazy branch.
co-author: @jbredeche <jean@quantopian.com>
In preparation for removal of widespread events, change the commission
methods to use params for sid and cost, instead of an event, for
compatibility with lazy branch.
co-author: @jbredeche <jean@quantopian.com>
The test had a check for a pandas version (0.12.0) which was out of date
with the version in requirements, meaning the tests have not been run
regularly and unstable.
Skip via the decorator to make it more noticeable that tests are not
being run.
Refer to cumulative and todays performance explicitly instead of always
looping through.
The third value (minute) for which this was useful, has been removed.
Also, there are some actions where only cumulative may need application,
e.g. application of dividends. (However, this patch does not remove
dividend processing from todays performance, but opens up later patches
to make that distinction.)
Moved from the `lazy-mainline` branch,
https://github.com/quantopian/zipline/pull/858
The intent of this patch to provide the basic class and readers
interfaces, developed on that branch, so that the use of creating the
object and opening paths etc. can be tested internally.
Additional changes beyond the lazy-mainline branch, addition of future
minute reader, and daily bar reader.
Also allow an argument of the future_daily_reader, though no such reader
yet exists.
It may be that future and equity readers share an interface, and a
further improvement would be providing an abstract base class.
co-author: @jbredeche <jean@quantopian.com>
Eddie Hebert