blob: 295f6751a16ab8b60a3b5f46d120159c1d014107 [file] [log] [blame]
alshabib6ca05622017-01-31 14:08:36 -08001#
2# Copyright 2017 the original author or authors.
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8# http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15#
16from twisted.internet import reactor
17from twisted.internet.defer import Deferred
18
19
20def asleep(dt):
21 """
22 Async (event driven) wait for given time period (in seconds)
23 :param dt: Delay in seconds
24 :return: Deferred to be fired with value None when time expires.
25 """
26 d = Deferred()
27 reactor.callLater(dt, lambda: d.callback(None))
28 return d