Format Python code according to PEP8

Author: TayTroye

recbole/model/general_recommender/asymknn.py

@@ -5,6 +5,7 @@
 from recbole.utils import InputType, ModelType
 from scipy.sparse import csr_matrix
 
+
 class ComputeSimilarity:
     def __init__(self, dataMatrix, topk=100, alpha=0.5, method="item"):
         r"""Computes the asymmetric cosine similarity of dataMatrix with alpha parameter.