Add an initial_items parameter to the LazyItemsDict constructor in order to facilitate integration with existing dict based code.

svn path=/main/trunk/; revision=3143

1 files changed, 5 insertions, 1 deletions

diff --git a/pym/portage_util.py b/pym/portage_util.py
index 6fd76090c..cd69733ba 100644
--- a/pym/portage_util.py
+++ b/pym/portage_util.py
@@ -715,9 +715,13 @@ class LazyItemsDict(dict):
 	"""A mapping object that behaves like a standard dict except that it allows
 	for lazy initialization of values via callable objects.  Lazy items can be
 	overwritten and deleted just as normal items."""
-	def __init__(self):
+	def __init__(self, initial_items=None):
 		dict.__init__(self)
 		self.lazy_items = {}
+		if initial_items is not None:
+			self.update(initial_items)
+			if isinstance(initial_items, LazyItemsDict):
+				self.lazy_items.update(initial_items.lazy_items)
 	def addLazyItem(self, item_key, value_callable):
 		"""Add a lazy item for the given key.  When the item is requested,
 		value_callable will be called with no arguments."""