Track Event for the Python SDK
Use the decide methods to return feature flag decisions for a user. Each decision includes whether the flag is enabled and which variation the user receives.
Decide
Returns a decision for a specific feature flag and user.
Version
SDK 3.7 and higher. See Minimum version support.
Description
Use this method to track events across multiple flag rules for a user. You should make only one track_event call per conversion (user action), even if many rules measure the conversion.
You call the track_event method on a user. For information about the user object, see OptimizelyUserContext for the Python SDK.
The attributes passed to track_event are only used for results segmentation on the Optimizely Experiment Results page.
Parameters
- eventKey (required) – String – The key of the event to be tracked. This key must match the event key provided when the event was created in the Optimizely app or REST APIREST API.
- eventTags (optional) – Map – A map of key-value pairs specifying the reserved tag keys names and their corresponding values for this particular event occurrence. eventTags are contextual metadata about conversion eventsconversion events. For example, revenue, load time, or total value. The following are available tag keys:
- revenue – An integer value that is used to track the revenue metric for your experiments, aggregated across all conversion events. revenue is recorded in cents.
- value – A floating point value that is used to track a custom value for your experiments. Use this to pass the value for numeric metrics.
- $opt_event_properties – A map of default and custom event properties and their values.
See reserved event tags.
Returns
This method sends conversion data to Optimizely Feature Experimentation. It does not provide return values.
Example
from optimizely import optimizely
optimizely_client = optimizely.Optimizely(sdk_key='123456')
user = optimizely_client.create_user_context("user123", {"logged_in": True})
# Event properties
properties = {
"category": "shoes",
"color": "red"
}
# Event tags
tags = {
"revenue": 10000,
"value": 100.00,
"$opt_event_properties": properties
}
# track_event(eventKey (required), eventTags (optional)
user.track_event("my_purchase_event_key", tags) Side effects
Additional Feature Experimentation functionality may be triggered by using this method.
Conversions
Calling this method records a conversion and attributes it to the variations that the user has seen. See How Optimizely Experimentation counts conversionsHow Optimizely Experimentation counts conversions.
You can create metrics on this conversion event and add metrics to experiments even after the conversion is tracked. See Events: Tracking clicks, pageviews, and other visitor actionsEvents: Tracking clicks, pageviews, and other visitor actions.
This method does not track events if the event key is invalid.
Changing the traffic allocation of running experiments affects how conversions are recorded and variations attributed to users. See Why you should not change a running experimentWhy you should not change a running experiment.
Notification listeners
Accessing this method triggers a call to the track notification listener.
This method does not call the TRACK notification listener if the event key is invalid.
Source files
The language and platform source files containing the implementation for Python are available on GitHub.