Merge pull request #25 from justatrade/fix_none_width

Fix none width

Author: learnpythonru

for_dict_challenges_bonus.py

@@ -39,7 +39,9 @@
 
 def generate_chat_history():
     messages_amount = random.randint(200, 1000)
-    users_ids = list({random.randint(1, 10000) for _ in range(random.randint(5, 20))})
+    users_ids = list(
+        {random.randint(1, 10000) for _ in range(random.randint(5, 20))}
+    )
     sent_at = datetime.datetime.now() - datetime.timedelta(days=100)
     messages = []
     for _ in range(messages_amount):
@@ -48,8 +50,17 @@ def generate_chat_history():
             "id": uuid.uuid4(),
             "sent_at": sent_at,
             "sent_by": random.choice(users_ids),
-            "reply_for": random.choice([None, random.choice([m["id"] for m in messages]) if messages else []]),
-            "seen_by": random.sample(users_ids, random.randint(1, len(users_ids))),
+            "reply_for": random.choice(
+                [
+                    None,
+                    (
+                        random.choice([m["id"] for m in messages])
+                        if messages else None
+                    ),
+                ],
+            ),
+            "seen_by": random.sample(users_ids,
+                                     random.randint(1, len(users_ids))),
             "text": lorem.sentence(),
         })
     return messages