Python

Prepare the applicationCopy Anchor Link

Use the template's examples/python/ directory. Set SENTRY_DSN in the runtime environment using the private DSN. The pinned SDK version is 2.39.0, from requirements.txt.

Run in the same Railway environment as the template, or use a locally reachable installation. A laptop cannot reach the private Railway listener through railway run.

Run the exampleCopy Anchor Link

From the template repository root:

python3 -m venv .venv
. .venv/bin/activate
pip install -r examples/python/requirements.txt
python examples/python/app.py

Example sourceCopy Anchor Link

This is the included app.py, reproduced without changes.

import os
import sentry_sdk

sentry_sdk.init(dsn=os.environ["SENTRY_DSN"], traces_sample_rate=1.0,
                enable_logs=True, send_default_pii=False)
with sentry_sdk.start_transaction(name="railway-example", op="task"):
    with sentry_sdk.start_span(op="work", description="child span"):
        sentry_sdk.logger.info("Railway structured log from Python")
        try:
            raise RuntimeError("Railway error example from Python")
        except RuntimeError:
            sentry_sdk.capture_exception()


def check_flush(pending, timeout):
    raise RuntimeError("Telemetry flush timed out")


sentry_sdk.flush(timeout=30, callback=check_flush)
print("SDK flush completed; verify Issues, Logs, and Traces")

Verify in SentryCopy Anchor Link

Open Issues, Logs and Traces for the same project and environment. Look for Railway error example from Python, Railway structured log from Python and railway-example. Confirm the child span belongs to its parent.

The sample uses full trace sampling for verification. Choose sampling for your workload. A completed flush does not prove server indexing. Use Troubleshooting if any telemetry type is missing.