better

nanovllm/engine/block_manager.py

@@ -31,13 +31,11 @@ class Block:
         self.hash = -1
         self.token_ids = []
 
-    def __repr__(self):
-        return f"{(self.block_id, self.ref_count, self.hash)}"
-
 
 class BlockManager:
 
     def __init__(self, num_blocks: int, block_size: int):
+        assert num_blocks > 0
         self.block_size = block_size
         self.blocks: list[Block] = [Block(i) for i in range(num_blocks)]
         self.hash_to_block_id: dict[int, int] = dict()