unreasonably effective

All synchronization primitives are available from threading and multiprocessing modules. A primitive from threading module synchronizes between threads from the same process. A primitive from multiprocessing module synchronizes between threads across multiples processes and is heavier.

Primitives:

1. Lock
2. RLock (Reentrant or recursive lock)
3. Semaphore
4. BoundedSemaphore (raises ValueError if more releases than acquires)
5. Event
6. Condition (Event + Lock)
7. Barrier