Showing content from http://svn.python.org/projects/python/branches/pep-382/Tools/pybench/With.py below:
from __future__ import with_statement from pybench import Test class WithFinally(Test): version = 2.0 operations = 20 rounds = 80000 class ContextManager(object): def __enter__(self): pass def __exit__(self, exc, val, tb): pass def test(self): cm = self.ContextManager() for i in range(self.rounds): with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass with cm: pass def calibrate(self): cm = self.ContextManager() for i in range(self.rounds): pass class TryFinally(Test): version = 2.0 operations = 20 rounds = 80000 class ContextManager(object): def __enter__(self): pass def __exit__(self): # "Context manager" objects used just for their cleanup # actions in finally blocks usually don't have parameters. pass def test(self): cm = self.ContextManager() for i in range(self.rounds): cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() cm.__enter__() try: pass finally: cm.__exit__() def calibrate(self): cm = self.ContextManager() for i in range(self.rounds): pass class WithRaiseExcept(Test): version = 2.0 operations = 2 + 3 + 3 rounds = 100000 class BlockExceptions(object): def __enter__(self): pass def __exit__(self, exc, val, tb): return True def test(self): error = ValueError be = self.BlockExceptions() for i in range(self.rounds): with be: raise error with be: raise error with be: raise error("something") with be: raise error("something") with be: raise error("something") with be: raise error("something") with be: raise error("something") with be: raise error("something") def calibrate(self): error = ValueError be = self.BlockExceptions() for i in range(self.rounds): pass
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