Added some descriptions.

data_file.py

@@ -1,5 +1,10 @@
 #!/usr/bin/python3
 
+"""
+With this module, you can store data in files easyly.
+"""
+
+
 import os
 import json
 
@@ -60,6 +65,10 @@ class DictFile:
 
 
 class DataclassJSONFile:
+    """
+    Store a dataclass in a JSON file.
+    """
+
     def __init__(self, file_path, dataclass, class_instance=None):
         self.file_path = file_path
         self.dataclass = dataclass
@@ -101,8 +110,11 @@ class DataclassJSONFile:
         return len(self.class_instance.__dict__)
 
 
-# these 2 functions do the exact same thing as in the class above
+# these 2 functions do the exact same thing as the functions in the class above
 def load_dataclass_json(dataclass, file_path: str):
+    """
+    Loads a dataclass instance from a json file.
+    """
     if os.path.exists(file_path):
         file = open(file_path, "r")
         class_dict = json.load(file)
@@ -115,6 +127,9 @@ def load_dataclass_json(dataclass, file_path: str):
 
 
 def save_dataclass_json(class_instance, file_path: str):
+    """
+    Saves a dataclass instance to a json file.
+    """
     class_dict = class_instance.__dict__
     class_dict = dict(filter(lambda pair: not callable(pair[1]), class_dict.items()))