# HG changeset patch
# User Antoine Pitrou
# Date 1229465843 -3600
diff -r 274abb6a147c -r 22238206e44a Tools/pybench/Lists.py
--- a/Tools/pybench/Lists.py
+++ b/Tools/pybench/Lists.py
@@ -293,3 +293,59 @@
for i in xrange(self.rounds):
pass
+
+class SimpleListComprehensions(Test):
+
+ version = 2.0
+ operations = 6
+ rounds = 20000
+
+ def test(self):
+
+ n = range(10) * 10
+
+ for i in xrange(self.rounds):
+ l = [x for x in n]
+ l = [x for x in n if x]
+ l = [x for x in n if not x]
+
+ l = [x for x in n]
+ l = [x for x in n if x]
+ l = [x for x in n if not x]
+
+ def calibrate(self):
+
+ n = range(10) * 10
+
+ for i in xrange(self.rounds):
+ pass
+
+class NestedListComprehensions(Test):
+
+ version = 2.0
+ operations = 6
+ rounds = 20000
+
+ def test(self):
+
+ m = range(10)
+ n = range(10)
+
+ for i in xrange(self.rounds):
+ l = [x for x in n for y in m]
+ l = [y for x in n for y in m]
+
+ l = [x for x in n for y in m if y]
+ l = [y for x in n for y in m if x]
+
+ l = [x for x in n for y in m if not y]
+ l = [y for x in n for y in m if not x]
+
+ def calibrate(self):
+
+ m = range(10) * 2
+ n = range(10) * 2
+
+ for i in xrange(self.rounds):
+ pass
+