From abe559c764d881a5dd96ce9b655d9f1cc77beb72 Mon Sep 17 00:00:00 2001 From: Scott Sanderson Date: Mon, 7 Mar 2016 16:41:50 -0500 Subject: [PATCH] DOC: Update NullFilter docstring. --- zipline/pipeline/filters/filter.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/zipline/pipeline/filters/filter.py b/zipline/pipeline/filters/filter.py index 822c60e8..70cad3e7 100644 --- a/zipline/pipeline/filters/filter.py +++ b/zipline/pipeline/filters/filter.py @@ -176,12 +176,12 @@ class NumExprFilter(NumericalExpression, Filter): class NullFilter(SingleInputMixin, Filter): """ - A Filter indicating whether an input input values are missing. + A Filter indicating whether input values are missing from an input. Parameters ---------- - factor zipline.pipeline.factor.Factor - The factor to compare with null. + factor : zipline.pipeline.factor.Factor + The factor to compare against its missing_value. """ window_length = 0