Use this module to prevent your Mac OS X system from sleeping while executing a long-running python script.
Quick Start
Just import caffeine. That’s it! You Mac OS X system will not sleep as long as the interpreter remains alive. No need to run any other commands. But if you want slightly finer controls, a few functions are available.
caffeine.on(display=False)
Use the on function to create a power assertion. Set display=True to also keep your display from sleeping. The default of display=False will allow your display to sleep but will keep your system awake so processing can continue. If a power assertion is active, calling on() with display set to the other value will change the assertion. Calling on() with the same value is a harmless no-op.
caffeine.off()
Use the off function to release any power assertion before your interpreter exits.
caffeine.verify()
Calls pmset -g assertions to verify what power assertions are active.
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