diff --git a/configurize/cli.py b/configurize/cli.py
index 2f4aeb0..677d245 100644
--- a/configurize/cli.py
+++ b/configurize/cli.py
@@ -5,7 +5,12 @@
 warnings.filterwarnings("ignore", ".*")
 
 from configurize import Config
-from configurize.utils import compare_in_vscode, get_object_from_file, show_or_compare
+from configurize.utils import (
+    compare_in_vscode,
+    get_module_from_file,
+    get_object_from_file,
+    show_or_compare,
+)
 
 
 def cfshow(ref: str | Config, exp: str | Config = None, key=None, query=None):
@@ -22,10 +27,28 @@ def cfshow(ref: str | Config, exp: str | Config = None, key=None, query=None):
 
     with mock_imports():
         if isinstance(ref, str):
-            ref = get_object_from_file(ref, "Exp")()
+            try:
+                ref = get_object_from_file(ref, "Exp")()
+            except:  # No Exp, just show last class
+                mod = get_module_from_file(ref)
+                cfgs = [
+                    v
+                    for v in mod.__dict__.values()
+                    if isinstance(v, type) and issubclass(v, Config)
+                ]
+                ref = cfgs[-1]()
 
         if isinstance(exp, str) and os.path.exists(exp):
-            exp = get_object_from_file(exp, "Exp")()
+            try:
+                exp = get_object_from_file(exp, "Exp")()
+            except:  # No Exp, just show last class
+                mod = get_module_from_file(exp)
+                cfgs = [
+                    v
+                    for v in mod.__dict__.values()
+                    if isinstance(v, type) and issubclass(v, Config)
+                ]
+                exp = cfgs[-1]()
 
     _ref = ref  # hold the reference
     if exp:
diff --git a/configurize/config.py b/configurize/config.py
index bd912ff..f4dc18c 100644
--- a/configurize/config.py
+++ b/configurize/config.py
@@ -14,6 +14,13 @@
 from .reference import CfgReferenceError, Ref
 from .utils import filter_traceback_frames, get_func_brief, writable_property
 
+__REPR_FLAG = False  # when enabled, all getattr fail will be skip
+
+
+class Repr(str):
+    def __repr__(self):
+        return str(self)
+
 
 class TaskSpec(TypedDict, total=False):
     """Indicate resource & entrypoint for specific task.
@@ -379,14 +386,22 @@ def __getattribute__(self, name: str):
         try:
             if not name.startswith("_"):
                 return self._get(name)
-        except AttributeError as e:
-            e.__traceback__ = filter_traceback_frames("configurize", e.__traceback__)
-            raise e from None
+        except Exception as e:
+            if __REPR_FLAG:
+                return Repr("❌ " + e.__repr__())
+            else:
+                e.__traceback__ = filter_traceback_frames(
+                    "configurize", e.__traceback__
+                )
+                raise e from None
         return super().__getattribute__(name)
 
     def __repr__(self):
         from pprint import pformat
 
+        global __REPR_FLAG
+        __REPR_FLAG = True
+
         text = [f"{self._class_name}("]
 
         for k, v in self.to_dict(rep=True).items():
@@ -398,6 +413,7 @@ def __repr__(self):
         text.append(")")
         if self.root() is self and self.__class__.__name__ == "Exp":
             text.append(f"🗺️ TL;DR 🗺️\n{self._brief()}")
+        __REPR_FLAG = False
         return "\n".join(text)
 
     def _brief(self) -> str:
diff --git a/configurize/utils.py b/configurize/utils.py
index 4607b3b..1b536f3 100644
--- a/configurize/utils.py
+++ b/configurize/utils.py
@@ -51,21 +51,29 @@ def filter_traceback_frames(
     return new_tb
 
 
-def get_object_from_file(file: str, name: str = "Exp") -> object:
+def get_module_from_file(file: str) -> object:
     """
-    get object by file.
+    get module by file.
     Args:
         file (str): file path.
-        name (str): object name.
     """
     import importlib
-    import sys
 
     module_name_without_ext = os.path.splitext(os.path.basename(file))[0]
     directory_path = os.path.dirname(file)
     sys.path.insert(0, directory_path)
     current_exp = importlib.import_module(module_name_without_ext)
-    sys.path.pop(0)
+    return current_exp
+
+
+def get_object_from_file(file: str, name: str = "Exp") -> object:
+    """
+    get object by file.
+    Args:
+        file (str): file path.
+        name (str): object name.
+    """
+    current_exp = get_module_from_file(file)
     obj = getattr(current_exp, name)
     return obj
 
diff --git a/pyproject.toml b/pyproject.toml
index f50e9f0..9c37ef2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "configurize"
-version = "0.1.7"
+version = "0.1.8"
 description = "Hierarchical configuration management with inheritance, cross-references, and diffing"
 readme = "README.md"
 license = {text = "MIT"}