Flask¶
The logfire.instrument_flask() method
will create a span for every request to your Flask application.
Install¶
Install logfire with the flask extra:
pip install 'logfire[flask]'
uv add 'logfire[flask]'
poetry add 'logfire[flask]'
Usage¶
Let's see a minimal example below. You can run it with python main.py:
main.py
import logfire
from flask import Flask
logfire.configure()
app = Flask(__name__)
logfire.instrument_flask(app)
@app.route("/")
def hello():
return "Hello!"
if __name__ == "__main__":
app.run(debug=True)
The keyword arguments of logfire.instrument_flask() are passed to the FlaskInstrumentor().instrument_app() method
of the OpenTelemetry Flask Instrumentation package, read more about it here.
In case you are using Gunicorn to run your Flask application, you can configure Logfire in Gunicorn as well.