From 87cc52cd05f0e07fef7b641bc5d3f7f6710cadb7 Mon Sep 17 00:00:00 2001
From: bxdd <bxd98@126.com>
Date: Thu, 10 Dec 2020 09:02:43 +0000
Subject: [PATCH] black format

---
 qlib/data/ops.py       | 3 ++-
 qlib/utils/__init__.py | 5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/qlib/data/ops.py b/qlib/data/ops.py
index 737507a67..6836b49b4 100644
--- a/qlib/data/ops.py
+++ b/qlib/data/ops.py
@@ -1385,6 +1385,7 @@ class Cov(PairRolling):
     def __init__(self, feature_left, feature_right, N):
         super(Cov, self).__init__(feature_left, feature_right, N, "cov")
 
+
 Operators = OpsWrapper()
 
 OpsList = [
@@ -1435,4 +1436,4 @@ OpsList = [
     If,
 ]
 
-Operators.register(OpsList)
\ No newline at end of file
+Operators.register(OpsList)
diff --git a/qlib/utils/__init__.py b/qlib/utils/__init__.py
index 18e621993..f7b406f58 100644
--- a/qlib/utils/__init__.py
+++ b/qlib/utils/__init__.py
@@ -729,13 +729,16 @@ def load_dataset(path_or_obj):
         return pd.read_csv(path_or_obj, parse_dates=True, index_col=[0, 1])
     raise ValueError(f"unsupported file type `{extension}`")
 
+
 #################### Operator Wrapper #####################
 
+
 class OpsWrapper(object):
     """Ops Wrapper"""
 
     def __init__(self):
         self._ops = {}
+
     def register(self, ops_list):
 
         for operator in ops_list:
@@ -744,4 +747,4 @@ class OpsWrapper(object):
     def __getattr__(self, key):
         if self._ops is {}:
             raise AttributeError("Please run qlib.init() first using qlib to register ops")
-        return self._ops[key]
\ No newline at end of file
+        return self._ops[key]