growthbook

import asyncio import os from growthbook import GrowthBookClient, Options, UserContext, FeatureRefreshStrategy async def main(): # Get client key from environment variable for security client_key = os.environ.get("GROWTHBOOK_CLIENT_KEY", "sdk-YOUR_CLIENT_KEY") api_host = os.environ.get("GROWTHBOOK_API_HOST", "https://cdn.growthbook.io") # User attributes for targeting and experimentation attributes = { "id": "user-123", "country": "US", "loggedIn": True } # Configure GrowthBook client options options = Options( api_host=api_host, client_key=client_key, # Optional: Enable real-time feature updates via Server-Sent Events (SSE) refresh_strategy=FeatureRefreshStrategy.SERVER_SENT_EVENTS ) # Create a UserContext instance user_context = UserContext(attributes=attributes) # Create an async GrowthBookClient instance (recommended for async apps) async with GrowthBookClient(options=options, user_context=user_context) as gb: # Load features from the GrowthBook API await gb.load_features() # Simple on/off feature gating if gb.is_on("my-awesome-feature"): # Replace with your feature key print("My awesome feature is ON!") else: print("My awesome feature is OFF.") # Get the value of a feature with a fallback button_color = gb.get_feature_value("button-color-feature", "blue") # Replace with your feature key print(f"Button color feature value: {button_color}") # Example for an experiment # Make sure 'pricing-experiment' and variations are configured in GrowthBook pricing_result = gb.run( { "key": "pricing-experiment", "variations": ["control", "variant-a", "variant-b"] } ) if pricing_result.in_experiment: print(f"User in pricing experiment, assigned variation: {pricing_result.value}") else: print("User not in pricing experiment.") print("GrowthBook client closed.") if __name__ == "__main__": # Set dummy keys for local testing, replace with actual keys or environment variables os.environ["GROWTHBOOK_CLIENT_KEY"] = "sdk-example12345" os.environ["GROWTHBOOK_API_HOST"] = "https://cdn.growthbook.io" asyncio.run(main())