Remove duplication.
diff --git a/Lib/datetime.py b/Lib/datetime.py
index 1ae7cb5..65f95d2 100644
--- a/Lib/datetime.py
+++ b/Lib/datetime.py
@@ -2057,7 +2057,7 @@
Because we know z.d said z was in daylight time (else [5] would have held and
we would have stopped then), and we know z.d != z'.d (else [8] would have held
-and we we have stopped then), and there are only 2 possible values dst() can
+and we have stopped then), and there are only 2 possible values dst() can
return in Eastern, it follows that z'.d must be 0 (which it is in the example,
but the reasoning doesn't depend on the example -- it depends on there being
two possible dst() outcomes, one zero and the other non-zero). Therefore