I'm trying to use EventVestor and Zacks data in a CustomFactor
from quantopian.pipeline.data.zacks import EarningsSurprises
from quantopian.pipeline.data.eventvestor import EarningsCalendar
from quantopian.pipeline.factors.eventvestor import (
BusinessDaysUntilNextEarnings,
BusinessDaysSincePreviousEarnings,
BusinessDaysSinceBuybackAuth,
BuybackAuthorizations,
EarningsCalendar
)
....
class test_factor(CustomFactor):
inputs=[
EarningsSurprises
BusinessDaysUntilNextEarnings,
BusinessDaysSinceBuybackAuth,
BusinessDaysSincePreviousEarnings,
]
def compute(self, today, assets, out,a,b,c,d):
print "1"
I get the following error:
NonPipelineInputs: Unexpected input types in str. Inputs to Pipeline
expressions must be Filters, Factors, Classifiers, or BoundColumns.
Got the following type(s) instead: [, , ]
I'm tried removing EarningsCalendar since its data. The rest are factors. I get the same error. Anybody else seen this?
