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Showing content from https://docs.sentry.io/platforms/python/tracing/troubleshooting/ below:

Troubleshooting | Sentry for Python

Troubleshooting Learn how to troubleshoot your tracing setup.

If you need help managing transactions, you can read more here. If you need additional help, you can ask on GitHub. Customers on a paid plan may also contact support.

Group Transactions

When Sentry captures transactions, they are assigned a transaction name. This name is generally auto-generated by the Sentry SDK based on the framework integrations you are using. If you can't leverage the automatic transaction generation (or want to customize how transaction names are generated) you can use the scope API to set transaction names or use a custom event processor.

For example, to set a transaction name:

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import sentry_sdk


scope = sentry_sdk.get_current_scope()
scope.set_transaction_name("UserListView")

You can define a custom before_send_transaction callback to modify transaction names:

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import sentry_sdk
from sentry_sdk.integrations.django import DjangoIntegration
from sentry_sdk.types import Event, Hint

def transaction_processor(event: Event, hint: Hint) -> Event | None:
    if event.get("type") == "transaction":
        
        transaction_name = event.get("transaction", "")

        
        if "/user/" in transaction_name:
            
            import re
            event["transaction"] = re.sub(r'/user/\d+/', '/user/:id/', transaction_name)

    return event

sentry_sdk.init(
    dsn="your-dsn",
    integrations=[DjangoIntegration()],
    traces_sample_rate=1.0,
    
    before_send_transaction=transaction_processor,
)

Control Data Truncation

Currently, every tag has a maximum character limit of 200 characters. Tags over the 200 character limit will become truncated, losing potentially important information. To retain this data, you can split data over several tags instead.

For example, a 200+ character tag like this:

https://empowerplant.io/api/0/projects/ep/setup_form/?user_id=314159265358979323846264338327&tracking_id=EasyAsABC123OrSimpleAsDoReMi&product_name=PlantToHumanTranslator&product_id=161803398874989484820458683436563811772030917980576

...will become truncated to:

Using span.set_tag for shorter values, in combination with span.set_data maintains the details.

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import sentry_sdk



base_url = "https://empowerplant.io"
endpoint = "/api/0/projects/ep/setup_form"
parameters = {
    "user_id": 314159265358979323846264338327,
    "tracking_id": "EasyAsABC123OrSimpleAsDoReMi",
    "product_name": "PlantToHumanTranslator",
    "product_id": 161803398874989484820458683436563811772030917980576,
}

with sentry_sdk.start_span(op="request", name="setup form") as span:
    span.set_tag("base_url", base_url)
    span.set_tag("endpoint", endpoint)
    span.set_data("parameters", parameters)
    make_request(
        "{base_url}/{endpoint}/".format(
            base_url=base_url,
            endpoint=endpoint,
        ),
        data=parameters
    )

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