Fix parsing date in Deserializable objects.

aiogram/types/base.py

@@ -59,6 +59,11 @@ class Deserializable:
             result[name] = attr
         return result
 
+    @classmethod
+    def _parse_date(cls, unix_time):
+        if unix_time is not None:
+            return datetime.datetime.fromtimestamp(unix_time)
+
     @property
     def bot(self) -> 'Bot':
         """

aiogram/types/chat_member.py

@@ -35,11 +35,6 @@ class ChatMember(Deserializable):
         self.can_send_other_messages: bool = can_send_other_messages
         self.can_add_web_page_previews: bool = can_add_web_page_previews
 
-    @classmethod
-    def _parse_date(cls, unix_time):
-        if unix_time is not None:
-            return datetime.datetime.fromtimestamp(unix_time)
-
     @classmethod
     def de_json(cls, raw_data):
         user = User.deserialize(raw_data.get('user'))

aiogram/types/message.py

@@ -74,10 +74,6 @@ class Message(Deserializable):
 
         self.content_type = content_type
 
-    @classmethod
-    def _parse_date(cls, unix_time):
-        return datetime.datetime.fromtimestamp(unix_time)
-
     @classmethod
     def de_json(cls, raw_data):
         message_id = raw_data.get('message_id')

aiogram/types/webhook_info.py

@@ -19,10 +19,6 @@ class WebhookInfo(Deserializable):
         self.max_connections: int = max_connections
         self.allowed_updates: [str] = allowed_updates
 
-    @classmethod
-    def _parse_date(cls, unix_time):
-        return datetime.datetime.fromtimestamp(unix_time)
-
     @classmethod
     def de_json(cls, raw_data):
         url = raw_data.get('url')