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Python client for the Unleash feature toggle system!

Project description

unleash-client-python

Coverage Status PyPI version PyPI - Python Version License: MIT

This is the Python client for Unleash. It implements Client Specifications 1.0 and checks compliance based on spec in unleash/client-specifications

What it supports:

  • Default activation strategies using 32-bit Murmurhash3
  • Custom strategies
  • Full client lifecycle:
    • Client registers with Unleash server
    • Client periodically fetches feature toggles and stores to on-disk cache
    • Client periodically sends metrics to Unleash Server
  • Tested on Linux (Ubuntu), OSX, and Windows

Check out the project documentation and the changelog.

Installation

Check out the package on Pypi!

pip install UnleashClient

For Flask Users

If you're looking into running Unleash from Flask, you might want to take a look at Flask-Unleash, the Unleash Flask extension. The extension builds upon this SDK to reduce the amount of boilerplate code you need to write to integrate with Flask. Of course, if you'd rather use this package directly, that will work too.

Usage

Initialization

from UnleashClient import UnleashClient

client = UnleashClient(
    url="https://unleash.herokuapp.com",
    app_name="my-python-app",
    custom_headers={'Authorization': '<API token>'})

client.initialize_client()

For more information about configuring UnleashClient, check out the docs!

Checking if a feature is enabled

A check of a simple toggle:

client.is_enabled("My Toggle")

Specifying a default value:

client.is_enabled("My Toggle", default_value=True)

Supplying application context:

app_context = {"userId": "test@email.com"}
client.is_enabled("User ID Toggle", app_context)

For more information about usage, see the Usage documentation.

Getting a variant

Checking for a variant:

context = {'userId': '2'}  # Context must have userId, sessionId, or remoteAddr.  If none are present, distribution will be random.

variant = client.get_variant("MyvariantToggle", context)

print(variant)
> {
>    "name": "variant1",
>    "payload": {
>        "type": "string",
>        "value": "val1"
>        },
>    "enabled": True
> }

For more information about variants, see the Variant documentation.

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