Faster and simpler _replace() method
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index d5f4283..d782c69 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -402,7 +402,7 @@
def _replace(self, **kwds):
'Return a new Point object replacing specified fields with new values'
- return Point(**dict(zip(('x', 'y'), self), **kwds))
+ return Point(*map(kwds.get, ('x', 'y'), self))
x = property(itemgetter(0))
y = property(itemgetter(1))
diff --git a/Lib/collections.py b/Lib/collections.py
index c3173db..be4d4fd 100644
--- a/Lib/collections.py
+++ b/Lib/collections.py
@@ -71,7 +71,7 @@
return dict(zip(%(field_names)r, self)) \n
def _replace(self, **kwds):
'Return a new %(typename)s object replacing specified fields with new values'
- return %(typename)s(**dict(zip(%(field_names)r, self), **kwds)) \n\n''' % locals()
+ return %(typename)s(*map(kwds.get, %(field_names)r, self)) \n\n''' % locals()
for i, name in enumerate(field_names):
template += ' %s = property(itemgetter(%d))\n' % (name, i)
if verbose: