feat: Enhance Python environment setup with system Python option and improve dependency installation

refactor: Clean up imports in currencies and users routes
fix: Update theme settings saving logic and clean up test imports

routes/users.py

@@ -3,9 +3,15 @@ from sqlalchemy.orm import Session
 
 from config.database import get_db
 from models.user import User
-from services.security import get_password_hash, verify_password, create_access_token, SECRET_KEY, ALGORITHM, get_current_user, oauth2_scheme
-from jose import jwt, JWTError
-from schemas.user import UserCreate, UserInDB, UserLogin, UserUpdate, PasswordResetRequest, PasswordReset, Token
+from services.security import create_access_token, get_current_user
+from schemas.user import (
+    PasswordReset,
+    PasswordResetRequest,
+    UserCreate,
+    UserInDB,
+    UserLogin,
+    UserUpdate,
+)
 
 router = APIRouter(prefix="/users", tags=["users"])
 
@@ -62,7 +68,7 @@ async def update_user_me(user_update: UserUpdate, current_user: User = Depends(g
         if existing_user:
             raise HTTPException(
                 status_code=status.HTTP_400_BAD_REQUEST, detail="Username already taken")
-        current_user.username = user_update.username
+    setattr(current_user, "username", user_update.username)
 
     if user_update.email and user_update.email != current_user.email:
         existing_user = db.query(User).filter(
@@ -70,7 +76,7 @@ async def update_user_me(user_update: UserUpdate, current_user: User = Depends(g
         if existing_user:
             raise HTTPException(
                 status_code=status.HTTP_400_BAD_REQUEST, detail="Email already registered")
-        current_user.email = user_update.email
+    setattr(current_user, "email", user_update.email)
 
     if user_update.password:
         current_user.set_password(user_update.password)