Add fxn.predictions.ready

Changelog.md

@@ -1,5 +1,6 @@
 ## 0.0.41
 + Added support for streaming predictions.
++ Added `fxn.predictions.ready` to check whether a predictor has been preloaded.
 + Added `verbose` parameter in `fxn.predictions.create` method to print prediction progress.
 + Added `--quiet` option in `fxn predict` CLI action to suppress verbose logging.
 + Fixed prediction errors when making passing in `str`, `list`, or `dict` arguments.

fxn/services/prediction.py

@@ -30,6 +30,18 @@ def __init__ (self, client: FunctionClient):
         self.__cache_dir = self.__class__.__get_home_dir() / ".fxn" / "cache"
         self.__cache_dir.mkdir(parents=True, exist_ok=True)
 
+    def ready (self, tag: str, **kwargs) -> bool:
+        """
+        Check whether a predictor has been preloaded and is ready to make predictions.
+
+        Parameters:
+            tag (str): Predictor tag.
+
+        Returns:
+            bool: Whether the predictor is ready to make predictions.
+        """
+        return tag in self.__cache
+
     def create (
         self,
         tag: str,