From ac7b44af23524917f2cb232e4f427298c38458d1 Mon Sep 17 00:00:00 2001
From: Scott Sanderson <scoutoss@gmail.com>
Date: Sat, 7 Nov 2015 15:50:30 -0500
Subject: [PATCH] ENH: Add USEquityPricingLoader.from_files.

---
 .../pipeline/loaders/equity_pricing_loader.py | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/zipline/pipeline/loaders/equity_pricing_loader.py b/zipline/pipeline/loaders/equity_pricing_loader.py
index 8d00f602..6494e977 100644
--- a/zipline/pipeline/loaders/equity_pricing_loader.py
+++ b/zipline/pipeline/loaders/equity_pricing_loader.py
@@ -16,6 +16,10 @@ from numpy import (
     uint32,
 )
 
+from zipline.data.us_equity_pricing import (
+    BcolzDailyBarReader,
+    SQLiteAdjustmentReader,
+)
 from zipline.lib.adjusted_array import (
     adjusted_array,
 )
@@ -40,6 +44,24 @@ class USEquityPricingLoader(PipelineLoader):
         self._calendar = self.raw_price_loader._calendar
         self.adjustments_loader = adjustments_loader
 
+    @classmethod
+    def from_files(cls, pricing_path, adjustments_path):
+        """
+        Create a loader from a bcolz equity pricing dir and a SQLite
+        adjustments path.
+
+        Parameters
+        ----------
+        pricing_path : str
+            Path to a bcolz directory written by a BcolzDailyBarWriter.
+        adjusments_path : str
+            Path to an adjusments db written by a SQLiteAdjustmentWriter.
+        """
+        return cls(
+            BcolzDailyBarReader(pricing_path),
+            SQLiteAdjustmentReader(adjustments_path)
+        )
+
     def load_adjusted_array(self, columns, dates, assets, mask):
         # load_adjusted_array is called with dates on which the user's algo
         # will be shown data, which means we need to return the data that would