Build pickler_choices list in a lazier way.
diff --git a/Lib/test/test_datetime.py b/Lib/test/test_datetime.py
index 693b98e..d174f69 100644
--- a/Lib/test/test_datetime.py
+++ b/Lib/test/test_datetime.py
@@ -16,22 +16,11 @@
from datetime import time
from datetime import date, datetime
-
-pickle_choices = [
- (pickle, pickle, 0),
- (pickle, pickle, 1),
- (pickle, pickle, 2),
- (cPickle, cPickle, 0),
- (cPickle, cPickle, 1),
- (cPickle, cPickle, 2),
- (pickle, cPickle, 0),
- (pickle, cPickle, 1),
- (pickle, cPickle, 2),
- (cPickle, pickle, 0),
- (cPickle, pickle, 1),
- (cPickle, pickle, 2),
- ]
-
+pickle_choices = [(pickler, unpickler, proto)
+ for pickler in pickle, cPickle
+ for unpickler in pickle, cPickle
+ for proto in range(3)]
+assert len(pickle_choices) == 2*2*3
# XXX The test suite uncovered a bug in Python 2.2.2: if x and y are
# XXX instances of new-style classes (like date and time) that both