diff options
| -rw-r--r-- | Misc/NEWS | 5 | ||||
| -rw-r--r-- | Tools/pybench/Lists.py | 55 |
2 files changed, 60 insertions, 0 deletions
@@ -136,6 +136,11 @@ Library support unusual filenames (such as those containing semi-colons) in Content-Disposition headers. +Tools/Demos +----------- + +- Issue #4677: add two list comprehension tests to pybench. + Extension Modules ----------------- diff --git a/Tools/pybench/Lists.py b/Tools/pybench/Lists.py index c39687e..29dabef 100644 --- a/Tools/pybench/Lists.py +++ b/Tools/pybench/Lists.py @@ -293,3 +293,58 @@ class SmallLists(Test): for i in range(self.rounds): pass + +class SimpleListComprehensions(Test): + + version = 2.0 + operations = 6 + rounds = 20000 + + def test(self): + + n = list(range(10)) * 10 + + for i in range(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 = list(range(10)) * 10 + + for i in range(self.rounds): + pass + +class NestedListComprehensions(Test): + + version = 2.0 + operations = 6 + rounds = 20000 + + def test(self): + + m = list(range(10)) + n = list(range(10)) + + for i in range(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 = list(range(10)) + n = list(range(10)) + + for i in range(self.rounds): + pass |