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Puts code to sleep.
The narcolepsy package contains code which alters the behavior of your application/api by injecting random sleep calls into decorated functions.
The following code is an example of using the @narcoleptic decorator.
from narcolepsy import narcoleptic @narcoleptic(max=5) # sleep for 5 seconds at max def foobar(): for x in xrange(1024): nested_function(x)
The @narcoleptic decorator takes three parameters (all optional):
- min: The minimum sleep time in seconds.
- max: The maximum sleep time in seconds.
- chance: The maximum number of lines that will be executed before a sleep() call is injected.
If no min or max are passed in, the constants defined in narcolepsy.constants will be used instead. If no chance is passed in, a value will be derived from the number of lines in the input function.
The easiest way to install narcolepsy is via pip:
$ pip install narcolepsy
As mentioned in the official documentation, sys.settrace() isn’t part of the Python language definition and thus, may not be available to all Python implementations.
In theory this could help test time-critical code (multi-producer/consumer concurrent applications), but I mostly just wanted to play around with line tracers.
This is a proof of concept and probably shouldn’t be used in any sort of real-world scenario where testing of time-critical code has any measure of importance. USE AT YOUR OWN RISK!
See the LICENSE file for details.
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