-

cool-RR · cool-RR · commit a8eda68e3ee8 · 2015-06-09T18:09:23.000+03:00
diff --git a/source_py3/python_toolbox/caching/decorators.py b/source_py3/python_toolbox/caching/decorators.py
@@ -18,8 +18,8 @@
 infinity = float('inf')
 
 
-class CLEAR_ENTIRE_CACHE:
-    '''Sentinel object for clearing the entire cache'''
+class CLEAR_ENTIRE_CACHE(misc_tools.NonInstantiable):
+    '''Sentinel object for clearing the entire cache.'''
 
 
 def _get_now():
diff --git a/source_py3/python_toolbox/combi/misc.py b/source_py3/python_toolbox/combi/misc.py
@@ -3,13 +3,14 @@
 
 import math
 
+from python_toolbox import misc_tools
 from python_toolbox import math_tools
 from python_toolbox import cute_iter_tools
 
 infinity = float('inf')
 
 
-class MISSING_ELEMENT: 
+class MISSING_ELEMENT(misc_tools.NonInstantiable): 
     '''A placeholder for a missing element used in internal calculations.'''
         
         
diff --git a/source_py3/python_toolbox/cute_iter_tools.py b/source_py3/python_toolbox/cute_iter_tools.py
@@ -12,12 +12,13 @@
 import numbers
 
 from python_toolbox import sequence_tools
+from python_toolbox import misc_tools
 from python_toolbox import math_tools
 
 infinity = float('inf')
 
 
-class _EMPTY_SENTINEL:
+class _EMPTY_SENTINEL(misc_tools.NonInstantiable):
     pass
 
 
@@ -482,7 +483,7 @@ def is_sorted(iterable, *, rising=True, strict=False, key=None):
         return True
         
     
-class _PUSHBACK_SENTINEL:
+class _PUSHBACK_SENTINEL(misc_tools.NonInstantiable):
     '''Sentinel used by `PushbackIterator` to say nothing was pushed back.'''
  
 class PushbackIterator:
diff --git a/source_py3/python_toolbox/nifty_collections/bagging.py b/source_py3/python_toolbox/nifty_collections/bagging.py
@@ -19,7 +19,7 @@
 from .abstract import Ordered, DefinitelyUnordered
 
 
-class _NO_DEFAULT: 
+class _NO_DEFAULT(misc_tools.NonInstantiable): 
     '''Stand-in value used in `_BaseBagMixin.pop` when no default is wanted.'''
             
 class _ZeroCountAttempted(Exception):
diff --git a/source_py3/python_toolbox/nifty_collections/lazy_tuple.py b/source_py3/python_toolbox/nifty_collections/lazy_tuple.py
@@ -6,13 +6,14 @@
 import collections
 import itertools
 
+from python_toolbox import misc_tools
 from python_toolbox import decorator_tools
 from python_toolbox import comparison_tools
 
 
 infinity = float('inf')
 
-class _SENTINEL:
+class _SENTINEL(misc_tools.NonInstantiable):
     '''Sentinel used to detect the end of an iterable.'''
     
 
diff --git a/source_py3/python_toolbox/sequence_tools/misc.py b/source_py3/python_toolbox/sequence_tools/misc.py
@@ -47,7 +47,7 @@ def flatten(iterable):
         return []
 
 
-class NO_FILL_VALUE:
+class NO_FILL_VALUE(misc_tools.NonInstantiable):
     '''
     Sentinel that means: Don't fill last partition with default fill values.
     '''
