Light up all sequence datatypes.

src/debugpy/server/inspect/__init__.py

@@ -16,7 +16,7 @@ class ChildObject:
     def __init__(self, value: object):
         self.value = value
 
-    def expr(self, obj: object) -> str:
+    def expr(self, parent_expr: str) -> str:
         raise NotImplementedError
     
 
@@ -27,8 +27,8 @@ class ChildAttribute(ChildObject):
         super().__init__(value)
         self.name = name
 
-    def expr(self, obj_expr: str) -> str:
-        return f"({obj_expr}).{self.name}"
+    def expr(self, parent_expr: str) -> str:
+        return f"({parent_expr}).{self.name}"
 
 
 class ObjectInspector:
@@ -84,7 +84,7 @@ def inspect(obj: object) -> ObjectInspector:
             return stdlib.ListInspector(obj)
         case {}:
             return stdlib.MappingInspector(obj)
-        case []:
+        case [*_] | set() | frozenset() | str() | bytes() | bytearray():
             return stdlib.SequenceInspector(obj)
         case _:
             return ObjectInspector(obj)

src/debugpy/server/inspect/stdlib.py

@@ -18,8 +18,8 @@ class ChildLen(ChildObject):
     def __init__(self, parent: object):
         super().__init__(len(parent))
 
-    def expr(self, obj_expr: str) -> str:
-        return f"len({obj_expr})"
+    def expr(self, parent_expr: str) -> str:
+        return f"len({parent_expr})"
 
 
 class ChildItem(ChildObject):
@@ -34,8 +34,8 @@ class ChildItem(ChildObject):
         key_repr = "".join(inspect(self.key).repr())
         return f"[{key_repr}]"
 
-    def expr(self, obj_expr: str) -> str:
-        return f"({obj_expr}){self.name}"
+    def expr(self, parent_expr: str) -> str:
+        return f"({parent_expr}){self.name}"
 
 
 class SequenceInspector(ObjectInspector):