add black and move back to small dataset

Pipfile

@@ -14,6 +14,7 @@ scikit-surprise = "*"
 python-dotenv = "*"
 scikit-learn = "*"
 streamlit = "*"
+black = "*"
 
 [dev-packages]
 

constants.py

@@ -4,7 +4,7 @@ from pathlib import Path
 
 class Constant:
 
-    DATA_PATH = Path('data/test')  # -- fill here the dataset size to use
+    DATA_PATH = Path('data/small')  # -- fill here the dataset size to use
 
     # Content
     CONTENT_PATH = DATA_PATH / 'content'