Added some debugging info to the summary

sasdata/data.py

@@ -5,7 +5,8 @@
 from quantities.quantity import NamedQuantity
 from sasdata.metadata import Metadata
 from sasdata.quantities.accessors import AccessorTarget
-from sasdata.data_backing import Group
+from sasdata.data_backing import Group, key_tree
+
 
 class SasData:
     def __init__(self, name: str, data_contents: list[NamedQuantity], raw_metadata: Group):
@@ -33,4 +34,6 @@ def summary(self, indent = "  "):
         s += f"{indent}Metadata:\n"
         s += self.metadata.summary()
 
+        s += key_tree(self._raw_metadata)
+
         return s

sasdata/data_backing.py

@@ -108,3 +108,19 @@ def build_main_data(data: list[NamedQuantity]) -> Function:
             pass
         case _:
             raise NotImplementedError("Unknown ")
+
+def key_tree(data: Group | Dataset, indent_amount=0, indent: str = "  ") -> str:
+    """ Show a metadata tree, showing the names of they keys used to access them"""
+    s = ""
+    if isinstance(data, Group):
+        for key in data.children:
+            s += indent*indent_amount + key + "\n"
+            s += key_tree(data.children[key], indent_amount=indent_amount+1, indent=indent)
+
+    if isinstance(data, Dataset):
+        s += indent*indent_amount + "[data]\n"
+        for key in data.attributes:
+            s += indent*indent_amount + key + "\n"
+            s += key_tree(data.attributes[key], indent_amount=indent_amount+1, indent=indent)
+
+    return s