diff --git a/yt_dlp/YoutubeDL.py b/yt_dlp/YoutubeDL.py
index d1094a01b6..31624f181a 100644
--- a/yt_dlp/YoutubeDL.py
+++ b/yt_dlp/YoutubeDL.py
@@ -555,7 +555,7 @@ class YoutubeDL:
         )
         self._allow_colors = Namespace(**{
             type_: not self.params.get('no_color') and supports_terminal_sequences(stream)
-            for type_, stream in self._out_files.items_ if type_ != 'console'
+            for type_, stream in self._out_files if type_ != 'console'
         })
 
         if sys.version_info < (3, 6):
@@ -3611,7 +3611,7 @@ class YoutubeDL:
             sys.getfilesystemencoding(),
             self.get_encoding(),
             ', '.join(
-                f'{key} {get_encoding(stream)}' for key, stream in self._out_files.items_
+                f'{key} {get_encoding(stream)}' for key, stream in self._out_files
                 if stream is not None and key != 'console')
         )
 
diff --git a/yt_dlp/downloader/common.py b/yt_dlp/downloader/common.py
index fad4e66647..465b5ef997 100644
--- a/yt_dlp/downloader/common.py
+++ b/yt_dlp/downloader/common.py
@@ -301,7 +301,7 @@ class FileDownloader:
     )
 
     def _report_progress_status(self, s, default_template):
-        for name, style in self.ProgressStyles.items_:
+        for name, style in self.ProgressStyles:
             name = f'_{name}_str'
             if name not in s:
                 continue
diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index 1249c0100b..48a94415db 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -5324,9 +5324,6 @@ class classproperty:
 
 class Namespace:
     """Immutable namespace"""
-    @property
-    def items_(self):
-        return self._dict.items()
 
     def __init__(self, **kwargs):
         self._dict = kwargs
@@ -5334,8 +5331,14 @@ class Namespace:
     def __getattr__(self, attr):
         return self._dict[attr]
 
+    def __contains__(self, item):
+        return item in self._dict.values()
+
+    def __iter__(self):
+        return iter(self._dict.items())
+
     def __repr__(self):
-        return f'{type(self).__name__}({", ".join(f"{k}={v}" for k, v in self.items_)})'
+        return f'{type(self).__name__}({", ".join(f"{k}={v}" for k, v in self)})'
 
 
 # Deprecated