added logging and get methods for inputs, outputs

step_pipeline/io.py

@@ -400,4 +400,4 @@ def delocalize_by(self):
 
     @property
     def optional(self):
-        return self._optional
+        return self._optional

step_pipeline/pipeline.py

@@ -955,6 +955,12 @@ def outputs(self, local_path, *local_paths, output_dir=None, name=None, delocali
         else:
             return output_specs
 
+    def get_inputs(self):
+        return list(self._input_specs)
+
+    def get_outputs(self):
+        return list(self._output_specs)
+
     def depends_on(self, upstream_step):
         """Marks this Step as being downstream of another Step in the pipeline, meaning that this Step can only run
         after the upstream_step has completed successfully.

step_pipeline/utils.py

@@ -118,8 +118,17 @@ def _path_exists__cached(path, only_check_the_cache=False, verbose=False):
         raise ValueError(f"Unexpected path type {type(path)}: {path}")
 
     if path in PATH_EXISTS_CACHE:
+        if args.verbose:
+            if PATH_EXISTS_CACHE[path]:
+                print(f"Path exists (cached): {path}")
+            else:
+                print(f"Missing path (cached): {path}")
+
         return PATH_EXISTS_CACHE[path]
+
     elif only_check_the_cache:
+        if args.verbose:
+            print(f"Missing path (only-checked-in-cache): {path}")
         # if we're only checking the cache and the path isn't in the cache, then we can return False
         return False