def acquire_read(self):
		self._read_ready.acquire()
		try:
			self._readers += 1
		finally:
			self._read_ready.release()
Check prerequisites.
dataset/ETHPy150Open Knewton/pettingzoo-python/pettingzoo/utils.py/ReadWriteLock.acquire_read--crossover with--dataset/ETHPy150Open ganeti/ganeti/lib/cmdlib/backup.py/LUBackupPrepare.CheckPrereq