FastFeatureFlag is a lightweight tool to generate and use feature flags. Build in python for python. The key components are:

• easy to add feature flag(s)
• easily activate/deactivate features
• naming/grouping flags
• define custom response for flagged features
• use environment variables as your on/off switch
• manage feature flags with a simple toml file
• define a shadow method which should be executed instead of your deactivated feature

🛠 Installation

pip install fastfeatureflag

poetry add fastfeatureflag

🏳 flag away ...

💡 Take a look at the decorator feature_flag() - that is all you need.

from fastfeatureflag.feature_flag import feature_flag

@feature_flag("off")
def broken_feature():
    return "I am broken"

broken_feature()
NotImplementedError: Feature not implemented