PERF: We already have nan cached as a local.

quantopian · Nov 27, 2017 · 4735f3b · 4735f3b
1 parent 3fdf2c8
commit 4735f3b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/zipline/pipeline/factors/statistical.py b/zipline/pipeline/factors/statistical.py
@@ -596,7 +596,7 @@ def vectorized_beta(dependents, independent, allowed_missing, out=None):
     N, M = dependents.shape
 
     if out is None:
-        out = np.full(M, np.nan)
+        out = np.full(M, nan)
 
     # Copy N times as a column vector and fill with nans to have the same
     # missing value pattern as the dependent variable.