以下是将给定伪代码转换为 Python 代码的实现： ```python import random import time import threading # 全局变量 running_flag = True total_allocated = 0 allocated_blocks = [] block_count = 0 def memory_operations(): global total_allocated, block_count, allocated_blocks while running_flag: if random.choice([True, False]): # 随机生成 4KB~4MB 的大小 size = random.randint(4 * 1024, 4 * 1024 * 1024) try: # 模拟 malloc 分配内存 block = bytearray(size) if total_allocated + size <= 2 * 1024 * 1024 * 1024: allocated_blocks.append(block) total_allocated += size block_count += 1 else: del block except MemoryError: pass else: if allocated_blocks: block = allocated_blocks.pop() total_allocated -= len(block) block_count -= 1 del block def print_status(): global total_allocated, block_count while running_flag: print(f"当前块数: {block_count}, 总分配量: {total_allocated} 字节") time.sleep(1) # 启动内存操作线程 memory_thread = threading.Thread(target=memory_operations) memory_thread.start() # 启动状态输出线程 print_thread = threading.Thread(target=print_status) print_thread.start() # 模拟运行一段时间 try: time.sleep(10) finally: running_flag = False memory_thread.join() print_thread.join() ```