docs: def acquire(self, block=True):
          """Acquire lock. Blocks until acquired if `block` is `True`, otherwise returns `False` if the lock could not be acquired."""
          while True:
              # Try to set the lock
              if self.redis.set(self.name, self.value, px=self.timeout, nx=True):
                  # It's ours until the timeout now
                  return True
              # Lock is taken
              if not block:
                  return False
              # If blocking, try again in a bit
              time.sleep(self.sleep)