ruff linting fixed

backend/db/errors/database_errors.py

@@ -8,7 +8,7 @@ def __init__(self, message: str) -> None:
 
 class ActionAlreadyPerformedError(Exception):
     """
-    The specified action was already performed on the database once before 
+    The specified action was already performed on the database once before
     and may not be performed again as to keep consistency.
     """
     def __init__(self, message: str) -> None:

backend/db/extensions.py

@@ -9,15 +9,15 @@
 The second variable in os.getenv specifies the default value.
 """
 # where the database is hosted
-db_host = os.getenv("DB_HOST", "localhost")    
-# port number on which the database server is listening         
-db_port = os.getenv("DB_PORT", "5432")   
-# username for the database               
-db_user = os.getenv("DB_USERNAME", "postgres")  
-# password for the user        
-db_password = os.getenv("DB_PASSWORD", "postgres")   
-# name of the database   
-db_database = os.getenv("DB_DATABASE", "delphi")        
+db_host = os.getenv("DB_HOST", "localhost")
+# port number on which the database server is listening
+db_port = os.getenv("DB_PORT", "5432")
+# username for the database
+db_user = os.getenv("DB_USERNAME", "postgres")
+# password for the user
+db_password = os.getenv("DB_PASSWORD", "postgres")
+# name of the database
+db_database = os.getenv("DB_DATABASE", "delphi")
 
 # dialect+driver://username:password@host:port/database
 DB_URI = f"postgresql://{db_user}:{db_password}@{db_host}:{db_port}/{db_database}"
@@ -29,7 +29,6 @@
 
 class Base(DeclarativeBase):
     """
-    This class is meant to be inherited from to define the database tables, see [db/models/models.py]. 
+    This class is meant to be inherited from to define the database tables, see [db/models/models.py].
     For usage, please check https://docs.sqlalchemy.org/en/13/orm/extensions/declarative/basic_use.html.
     """
-    pass

backend/db/models/models.py

@@ -1,5 +1,5 @@
 from abc import abstractmethod
-from dataclasses import dataclass # automatically add special methods as __init__() and __repr__()
+from dataclasses import dataclass  # automatically add special methods as __init__() and __repr__()
 from datetime import datetime
 from typing import Generic, TypeVar
 
@@ -25,7 +25,7 @@
 class AbstractModel(Generic[D]):
     """
     This class is meant to be inherited by the python classes for the database tables.
-    It makes sure that every child implements the to_domain_model function 
+    It makes sure that every child implements the to_domain_model function
     and receives Pydantic data validation.
     """
     @abstractmethod
@@ -34,7 +34,6 @@ def to_domain_model(self) -> D:
         Change to an actual easy-to-use dataclass defined in [domain/models/*].
         This prevents working with instances of SQLAlchemy's Base class.
         """
-        pass
 
 # See the EER diagram for a more visual representation.
 

backend/domain/logic/basic_operations.py

@@ -13,7 +13,7 @@
 def get(session: Session, object_type: type[T], ident: int) -> T:
     """
     General function for retrieving a single object from the database.
-    The type of the object and its id as well a session object has to be provided. 
+    The type of the object and its id as well a session object has to be provided.
     """
     generic_object: T | None = session.get(object_type, ident)
 

backend/domain/models/UserDataclass.py

@@ -3,7 +3,7 @@
 
 class UserDataclass(BaseModel):
     """
-    This user does not have any roles yet. 
+    This user does not have any roles yet.
     When the roles become specified, use the almost equivalent APIUser.
     """
     id: int