Create a SlotDict constructor which can take an optional positional arg that

is passed to the update() method (similar to the dict constructor), and also
pass keyword arguments into the update() method if any are given. This makes
it possible to use the constructor similarly to the way that the
_emerge.SlotObject constructor is used.

svn path=/main/trunk/; revision=11230

1 files changed, 13 insertions, 0 deletions

diff --git a/pym/portage/cache/mappings.py b/pym/portage/cache/mappings.py
index d0ca487f0..75f97d6ae 100644
--- a/pym/portage/cache/mappings.py
+++ b/pym/portage/cache/mappings.py
@@ -142,6 +142,19 @@ def slot_dict_class(keys, prefix="_val_"):
 			__slots__ = ("__weakref__",) + \
 				tuple(prefix + k for k in allowed_keys)
 
+			def __init__(self, *args, **kwargs):
+
+				if len(args) > 1:
+					raise TypeError(
+						"expected at most 1 positional argument, got " + \
+						repr(1 + len(args)))
+
+				if args:
+					self.update(args[0])
+
+				if kwargs:
+					self.update(kwargs)
+
 			def __iter__(self):
 				for k, v in self.iteritems():
 					yield k