本文整理汇总了Python中tornado.gen.engine方法的典型用法代码示例。如果您正苦于以下问题：Python gen.engine方法的具体用法？Python gen.engine怎么用？Python gen.engine使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类tornado.gen的用法示例。
在下文中一共展示了gen.engine方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_stack_context_leak_exception
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_stack_context_leak_exception(self):
# same as previous, but with a function that exits with an exception
@gen.engine
def inner(callback):
yield gen.Task(self.io_loop.add_callback)
1 / 0
@gen.engine
def outer():
for i in range(10):
try:
yield gen.Task(inner)
except ZeroDivisionError:
pass
stack_increase = len(stack_context._state.contexts) - initial_stack_depth
self.assertTrue(stack_increase <= 2)
self.stop()
initial_stack_depth = len(stack_context._state.contexts)
self.run_gen(outer) 示例2: test_task_refcounting
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_task_refcounting(self):
# On CPython, tasks and their arguments should be released immediately
# without waiting for garbage collection.
@gen.engine
def f():
class Foo(object):
pass
arg = Foo()
self.arg_ref = weakref.ref(arg)
task = gen.Task(self.io_loop.add_callback, arg=arg)
self.task_ref = weakref.ref(task)
yield task
self.stop()
self.run_gen(f)
self.assertIs(self.arg_ref(), None)
self.assertIs(self.task_ref(), None) 示例3: test_yield_in_with
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_yield_in_with(self):
@gen.engine
def f():
self.callback = yield gen.Callback('a')
with StackContext(functools.partial(self.context, 'c1')):
# This yield is a problem: the generator will be suspended
# and the StackContext's __exit__ is not called yet, so
# the context will be left on _state.contexts for anything
# that runs before the yield resolves.
yield gen.Wait('a')
with self.assertRaises(StackContextInconsistentError):
f()
self.wait()
# Cleanup: to avoid GC warnings (which for some reason only seem
# to show up on py33-asyncio), invoke the callback (which will do
# nothing since the gen.Runner is already finished) and delete it.
self.callback()
del self.callback 示例4: main
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def main():
parse_command_line()
t = Timer(e1)
results = t.timeit(options.num) / options.num
print('engine: %0.3f ms per iteration' % (results * 1000))
t = Timer(c1)
results = t.timeit(options.num) / options.num
print('coroutine: %0.3f ms per iteration' % (results * 1000)) 示例5: test_no_yield
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_no_yield(self):
@gen.engine
def f():
self.stop()
self.run_gen(f) 示例6: test_inline_cb
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_inline_cb(self):
@gen.engine
def f():
(yield gen.Callback("k1"))()
res = yield gen.Wait("k1")
self.assertTrue(res is None)
self.stop()
self.run_gen(f) 示例7: test_ioloop_cb
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_ioloop_cb(self):
@gen.engine
def f():
self.io_loop.add_callback((yield gen.Callback("k1")))
yield gen.Wait("k1")
self.stop()
self.run_gen(f) 示例8: test_exception_phase1
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_exception_phase1(self):
@gen.engine
def f():
1 / 0
self.assertRaises(ZeroDivisionError, self.run_gen, f) 示例9: test_exception_in_task_phase1
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_exception_in_task_phase1(self):
def fail_task(callback):
1 / 0
@gen.engine
def f():
try:
yield gen.Task(fail_task)
raise Exception("did not get expected exception")
except ZeroDivisionError:
self.stop()
self.run_gen(f) 示例10: test_exception_in_task_phase2
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_exception_in_task_phase2(self):
# This is the case that requires the use of stack_context in gen.engine
def fail_task(callback):
self.io_loop.add_callback(lambda: 1 / 0)
@gen.engine
def f():
try:
yield gen.Task(fail_task)
raise Exception("did not get expected exception")
except ZeroDivisionError:
self.stop()
self.run_gen(f) 示例11: test_with_arg
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_with_arg(self):
@gen.engine
def f():
(yield gen.Callback("k1"))(42)
res = yield gen.Wait("k1")
self.assertEqual(42, res)
self.stop()
self.run_gen(f) 示例12: test_with_arg_tuple
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_with_arg_tuple(self):
@gen.engine
def f():
(yield gen.Callback((1, 2)))((3, 4))
res = yield gen.Wait((1, 2))
self.assertEqual((3, 4), res)
self.stop()
self.run_gen(f) 示例13: test_key_reuse
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_key_reuse(self):
@gen.engine
def f():
yield gen.Callback("k1")
yield gen.Callback("k1")
self.stop()
self.assertRaises(gen.KeyReuseError, self.run_gen, f) 示例14: test_key_mismatch
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_key_mismatch(self):
@gen.engine
def f():
yield gen.Callback("k1")
yield gen.Wait("k2")
self.stop()
self.assertRaises(gen.UnknownKeyError, self.run_gen, f) 示例15: test_key_mismatch_tuple
# 需要导入模块: from tornado import gen [as 别名]
# 或者: from tornado.gen import engine [as 别名]
def test_key_mismatch_tuple(self):
@gen.engine
def f():
yield gen.Callback((1, 2))
yield gen.Wait((2, 3))
self.stop()
self.assertRaises(gen.UnknownKeyError, self.run_gen, f)