Placed exceptions to errors module

classes/errors/holo_user.py

@@ -0,0 +1,24 @@
+"""Exceptions that are meant to be used by HoloUser class
+and other modules that handle those exceptions"""
+
+class UserNotFoundError(Exception):
+    """HoloUser could not find user with such an ID in database"""
+    def __init__(self, user, user_id):
+        self.user = user
+        self.user_id = user_id
+        super().__init__(f"User of type {type(self.user)} with id {self.user_id} was not found")
+
+class UserInvalidError(Exception):
+    """Provided to HoloUser object is not supported"""    
+    def __init__(self, user):
+        self.user = user
+        super().__init__(f"Could not find HoloUser by using {type(self.user)} as an input type")
+
+class LabelTooLongError(Exception):
+    def __init__(self, label: str) -> None:
+        self.label = label
+        super().__init__(f"Could not set label to '{label}' because it is {len(label)} characters long (16 is maximum)")
+
+class LabelSettingError(Exception):
+    def __init__(self, exp: Exception, trace: str) -> None:
+        super().__init__(f"❌ **Could not set label**\n\nException: `{exp}`\n\n**Traceback:**\n```\n{trace}\n```")