Small clarification in docstring of dict.update(): the positional argument is not...

diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index f2ebf456b469fdcd3474d7db28e87a237a99c227..ac99cfb18e7b292cbbac76300db1db6bf31175fd 100644 (file)
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -2167,9 +2167,9 @@ PyDoc_STRVAR(values__doc__,
 "D.values() -> list of D's values");
 
 PyDoc_STRVAR(update__doc__,
-"D.update(E, **F) -> None.  Update D from dict/iterable E and F.\n"
-"If E has a .keys() method, does:     for k in E: D[k] = E[k]\n\
-If E lacks .keys() method, does:     for (k, v) in E: D[k] = v\n\
+"D.update([E, ]**F) -> None.  Update D from dict/iterable E and F.\n"
+"If E present and has a .keys() method, does:     for k in E: D[k] = E[k]\n\
+If E present and lacks .keys() method, does:     for (k, v) in E: D[k] = v\n\
 In either case, this is followed by: for k in F: D[k] = F[k]");
 
 PyDoc_STRVAR(fromkeys__doc__,