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Handling UTF-8 Encoding implementing SQLite in Python 3.10 and FastAPI

👀 Views: 84 💬 Answers: 1 📅 Created: 2025-06-26
python-3.x sqlite fastapi Python

I can't seem to get I've looked through the documentation and I'm still confused about Hey everyone, I'm running into an issue that's driving me crazy. I'm currently developing a FastAPI application that uses SQLite as the database backend. I'm running into issues with UTF-8 encoding when inserting non-ASCII characters into my database. Despite setting the encoding in the database connection string, I'm still seeing errors when trying to execute inserts. Here's what I've tried so far. First, I set up my SQLite database connection like this: ```python from sqlalchemy import create_engine from sqlalchemy.orm import sessionmaker DATABASE_URL = 'sqlite:///./test.db' engine = create_engine(DATABASE_URL, connect_args={'check_same_thread': False}) SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine) ``` Next, I defined a model with a string field that should accept UTF-8 characters: ```python from sqlalchemy import Column, Integer, String from sqlalchemy.ext.declarative import declarative_base Base = declarative_base() class Item(Base): __tablename__ = 'items' id = Column(Integer, primary_key=True, index=True) name = Column(String, index=True) ``` When I attempt to insert an item with a non-ASCII name like this: ```python item = Item(name='Café') with SessionLocal() as session: session.add(item) session.commit() ``` I get the following behavior: ``` sqlite3.OperationalError: near "Café": syntax behavior ``` I've confirmed that the database is set up correctly and even checked the SQLite documentation regarding UTF-8 support. I'm not sure if the scenario is with the way I'm handling the connection or if there’s something specific to how FastAPI handles requests. Can anyone guide to troubleshoot this further? Are there specific configurations I should be looking at? Also, I’ve tried different approaches to create the database and confirmed that it’s set to use UTF-8, but the errors continue. Any insights would be greatly appreciated. This is part of a larger web app I'm building. Is there a better approach? For context: I'm using Python on Windows. I'd really appreciate any guidance on this. I'm developing on macOS with Python.