flipt-client 0.10.0

Flipt Client Evaluation SDK

Flipt Client Python

The flipt-client-python library contains the Python source code for the Flipt client-side evaluation client.

Installation

pip install flipt-client

Supported Architectures

This SDK currently supports the following OSes/architectures:

• Linux x86_64
• Linux arm64
• MacOS x86_64
• MacOS arm64

Usage

In your Python code you can import this client and use it as so:

from flipt_client import FliptEvaluationClient

# "namespace" and "engine_opts" are two keyword arguments that this constructor accepts
# namespace: which namespace to fetch flag state from
# engine_opts: follows the model EngineOpts in the models.py file. Configures the url of the upstream Flipt instance, the interval in which to fetch new flag state, and the authentication method if your upstream Flipt instance requires it
flipt_evaluation_client = FliptEvaluationClient()

variant_result = flipt_evaluation_client.evaluate_variant(flag_key="flag1", entity_id="entity", context={"fizz": "buzz"})

print(variant_result)

Constructor Arguments

The FliptEvaluationClient constructor accepts two optional arguments:

• namespace: The namespace to fetch flag state from. If not provided, the client will default to the default namespace.
• engine_opts: An instance of the EngineOpts class that supports several options for the client. The structure is:
  • url: The URL of the upstream Flipt instance. If not provided, the client will default to http://localhost:8080.
  • update_interval: The interval (in seconds) in which to fetch new flag state. If not provided, the client will default to 120 seconds.
  • authentication: The authentication strategy to use when communicating with the upstream Flipt instance. If not provided, the client will default to no authentication. See the Authentication section for more information.
  • reference: The reference to use when fetching flag state. If not provided, reference will not be used.

Authentication

The FliptEvaluationClient supports the following authentication strategies:

• No Authentication (default)
• Client Token Authentication
• JWT Authentication