根据我所做的测试，tracemalloc似乎不跟踪释放的内存。

import tracemalloc
import gc
tracemalloc.start(1)
y = None

def dump_tracemalloc_snapshot():
        gc.collect()
        snapshot = tracemalloc.take_snapshot()
        stats = snapshot.statistics('traceback')
        for stat in stats[:3]:
            print("%s memory blocks: %.1f KiB" % (stat.count, stat.size / 1024))

            for line in stat.traceback.format():
                print(line)

        print('\n\n')        

def allocate_memory():
    global y
    x = []
    for i in range(100000):
        x.append(f"AAA{i}")
    y = x

if __name__=="__main__":
    allocate_memory()
    
    dump_tracemalloc_snapshot()
    del y 
    dump_tracemalloc_snapshot()

输出：

100001 memory blocks: 6337.7 KiB
  File "/Users/jafar.atili/Code/tracemalloc_parser/file.py", line 23
    x.append(f"AAA{i}")
1 memory blocks: 0.1 KiB
  File "/Users/jafar.atili/Code/tracemalloc_parser/file.py", line 19
    def allocate_memory():
1 memory blocks: 0.1 KiB
  File "/Users/jafar.atili/Code/tracemalloc_parser/file.py", line 6
    def dump_tracemalloc_snapshot():


26 memory blocks: 2.1 KiB
  File "/opt/homebrew/Cellar/python@3.11/3.11.1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/linecache.py", line 137
    lines = fp.readlines()
2 memory blocks: 0.2 KiB
  File "/opt/homebrew/Cellar/python@3.11/3.11.1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/linecache.py", line 143
    cache[filename] = size, mtime, lines, fullname
1 memory blocks: 0.1 KiB
  File "/Users/jafar.atili/Code/tracemalloc_parser/file.py", line 19
    def allocate_memory():