Issue 4922: Incorrect comments for MutableSet.add() and MutableSet.discard().
Needs to be backported to 2.6 and forward ported to 3.0 and 3.1.
diff --git a/Lib/_abcoll.py b/Lib/_abcoll.py
index a5fee08..38b44a5 100644
--- a/Lib/_abcoll.py
+++ b/Lib/_abcoll.py
@@ -249,12 +249,12 @@
@abstractmethod
def add(self, value):
- """Return True if it was added, False if already there."""
+ """Add an element."""
raise NotImplementedError
@abstractmethod
def discard(self, value):
- """Return True if it was deleted, False if not there."""
+ """Remove an element. Do not raise an exception if absent."""
raise NotImplementedError
def remove(self, value):