[Python-checkins] r67965 - in python/trunk: Misc/NEWS Tools/pybench/Lists.py

Sat Dec 27 21:34:52 CET 2008

Author: antoine.pitrou
Date: Sat Dec 27 21:34:52 2008
New Revision: 67965
Log:
Issue #4677: add two list comprehension tests to pybench.
Modified:
 python/trunk/Misc/NEWS
 python/trunk/Tools/pybench/Lists.py
Modified: python/trunk/Misc/NEWS
==============================================================================

--- python/trunk/Misc/NEWS	(original)
+++ python/trunk/Misc/NEWS	Sat Dec 27 21:34:52 2008
@@ -190,6 +190,11 @@
 - Issue #4730: Fixed the cPickle module to handle correctly astral characters
 when protocol 0 is used.
 
+Tools/Demos
+-----------
+
+- Issue #4677: add two list comprehension tests to pybench.
+
 Build
 -----
 
Modified: python/trunk/Tools/pybench/Lists.py
==============================================================================
--- python/trunk/Tools/pybench/Lists.py	(original)
+++ python/trunk/Tools/pybench/Lists.py	Sat Dec 27 21:34:52 2008
@@ -293,3 +293,58 @@
 
 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)
+ n = range(10)
+
+ for i in xrange(self.rounds):
+ pass
