pip install amplitude-experiment

from amplitude_experiment import Experiment, RemoteEvaluationConfig, RemoteEvaluationClient, User

# (1) Get your deployment's API key
apiKey = 'YOUR-API-KEY'

 # (2) Initialize the experiment remote evaluation
experiment = Experiment.initialize_remote(api_key)

# (3) Fetch variants for a user
user = User(
    device_id="abcdefg",
    user_id="user@company.com",
    user_properties={
        'premium': True
    }
)

# (4) Lookup a flag's variant
#
# To fetch synchronous
variants = experiment.fetch(user)
variant = variants['YOUR-FLAG-KEY']
if variant:
    if variant.value == 'on':
        # Flag is on
    else:
        # Flag is off

# To fetch asynchronous
experiment.fetch_async(user, fetch_callback)

def fetch_callback(user, variants):
    variant = variants['YOUR-FLAG-KEY']
    if variant:
        if variant.value == 'on':
            # Flag is on
        else:
            # Flag is off

# (1) Initialize the local evaluation client with a server deployment key.
experiment = Experiment.initialize_local(api_key)

# (2) Start the local evaluation client.
experiment.start()

# (3) Evaluate a user.
user = User(
    device_id="abcdefg",
    user_id="user@company.com",
    user_properties={
        'premium': True
    }
)
variants = experiment.evaluate(user)