Cython API: Fixed a bug when setting NA values in Column_multi_elts, and

added some properties

python/obitools3/dms/column/column.pyx

@@ -131,7 +131,7 @@ cdef class Column(OBIWrapper) :
         column_p = column_pp[0]
         column_type = column_p.header.returned_data_type
         column_class = Column.get_column_class(column_type, (column_p.header.nb_elements_per_line > 1))
-        column = OBIWrapper.new(column_class, column_pp)
+        column = OBIWrapper.new_wrapper(column_class, column_pp)
         
         column._view = view
         column._alias = column_name_b
@@ -258,7 +258,12 @@ cdef class Column(OBIWrapper) :
     # data_type property getter
     @property
     def data_type(self):
-        return name_data_type(self.pointer().header.returned_data_type)
+        return name_data_type(self.data_type_int)
+ 
+    # data_type integer code property getter
+    @property
+    def data_type_int(self):
+        return self.pointer().header.returned_data_type
 
     # original_name property getter
     @property
@@ -295,6 +300,10 @@ cdef class Column_multi_elts(Column) :
         return Column_line(self, line_nb)
     
     cpdef set_line(self, index_t line_nb, object values):
+        if values is None :
+            for element_name in self.elements_names :
+                self.set_item(line_nb, element_name, None)
+        else :
             for element_name in values :
                 self.set_item(line_nb, element_name, values[element_name])
 
@@ -333,6 +342,17 @@ cdef class Column_line :
             yield element_name
 
 
+    # column property getter
+    @property
+    def column(self):
+        return self._column
+
+    # index property getter
+    @property
+    def index(self):
+        return self._index
+        
+    
     cpdef update(self, data):       # TODO ?????
         if isinstance(data, dict):
             data=data.items()