Source code for aicssegmentation.util.lazy

# Lazy evaluation utils


def lazy_property(fn):
    """
    Decorator: make a lazy-evaluated property
    """
    attr_name = "_lazy_" + fn.__name__

    @property
    def _lazy_property(self):
        if not hasattr(self, attr_name):
            setattr(self, attr_name, fn(self))
        return getattr(self, attr_name)

    return _lazy_property