-

cool-RR · cool-RR · commit 06fbfa56bf56 · 2014-10-03T13:42:33.000+03:00
diff --git a/source_py3/python_toolbox/combi/comb_space.py b/source_py3/python_toolbox/combi/comb_space.py
@@ -10,7 +10,7 @@ class CombSpace(PermSpace):
     
     Every item in a `CombSpace` is a `Comb`.
     '''
-    def __init__(self, iterable_or_length, n_elements, slice_=None,
+    def __init__(self, iterable_or_length, n_elements, *, slice_=None,
                  _domain_for_checking=None, _degrees_for_checking=None):
         PermSpace.__init__(
             self, iterable_or_length=iterable_or_length, n_elements=n_elements,
diff --git a/source_py3/python_toolbox/combi/perm_space.py b/source_py3/python_toolbox/combi/perm_space.py
@@ -132,7 +132,7 @@ def coerce(cls, argument):
         else:
             return cls(argument)
     
-    def __init__(self, iterable_or_length, domain=None, n_elements=None, 
+    def __init__(self, iterable_or_length, domain=None, *, n_elements=None, 
                  fixed_map=None, degrees=None, is_combination=False,
                  slice_=None):
         
diff --git a/source_py3/test_python_toolbox/test_combi/test_perm_space.py b/source_py3/test_python_toolbox/test_combi/test_perm_space.py
@@ -545,4 +545,6 @@ def test_recurrent():
         ('a', 'c'),
         ('b', 'b'),
         ('b', 'c'),
-    )
+    )
+    
+    assert PermSpace(4).unrecurrented == PermSpace(4)
