Moved encoder from a separate file to be a part of document.py

src/preprocessing/document.py → src/document.py

 import json
+from json import JSONEncoder
 class Document:
@@ -8,3 +9,8 @@ class Document:
     def to_json(self):
         return json.dumps(self, default=lambda o: o.__dict__)
+
+
+class Encoder(JSONEncoder):
+    def default(self, o: Document):
+        return o.__dict__

src/preprocessing/document_encoder.py

-from json import JSONEncoder
-
-from src.preprocessing.document import Document
-
-
-class DocumentEncoder(JSONEncoder):
-    def default(self, o: Document):
-        return o.__dict__

src/preprocessing/preprocessor.py

 import json
 import os
-import nltk
+import nltk
 from nltk import WordNetLemmatizer
-from src.preprocessing.document import Document
-from src.preprocessing.document_encoder import DocumentEncoder
+from src import document
+from src.document import Document
 from src.preprocessing.word_prunner import WordPrunner
@@ -17,7 +17,7 @@ def preprocess_folder(input_folder_path: str, output_persistence_path):
             documents.append(preprocessor.read_file(input_folder_path + file))
     with open(output_persistence_path, 'w') as file:
-        json.dump(documents, file, cls=DocumentEncoder)
+        json.dump(documents, file, cls=document.Encoder)
 class Preprocessor: