formerly deprecate the iteritems of vectors

Author: fchapoton

src/sage/modules/free_module_element.pyx

@@ -1715,6 +1715,8 @@ cdef class FreeModuleElement(Vector):   # abstract base class
         cdef dict d = self.dict(copy=False)
         yield from d.items()
 
+    iteritems = deprecated_function_alias(40960, "items")
+
     def __abs__(self):
         """
         Return the square root of the sum of the squares of the entries of
@@ -5214,6 +5216,8 @@ cdef class FreeModuleElement_generic_sparse(FreeModuleElement):
         """
         return iter(self._entries.items())
 
+    iteritems = deprecated_function_alias(40960, "items")
+
     def __reduce__(self):
         """
         EXAMPLES::