I tried to check for memory leaks in a bunch of functions of mine using a simple decorator. It works, but it fails with this code, returning a random count_diff at every run. Why?
import tracemalloc import gc import functools from uuid import uuid4 import pickle def getUuid(): return str(uuid4()) def trace(func): @functools.wraps(func) def inner(): tracemalloc.start() snapshot1 = tracemalloc.take_snapshot().filter_traces( (tracemalloc.Filter(True, __file__), ) ) for i in range(100): func() gc.collect() snapshot2 = tracemalloc.take_snapshot().filter_traces( (tracemalloc.Filter(True, __file__), ) ) top_stats = snapshot2.compare_to(snapshot1, 'lineno') tracemalloc.stop() for stat in top_stats: if stat.count_diff > 3: raise ValueError(f"count_diff: {stat.count_diff}") return inner dict_1 = {getUuid(): i for i in range(1000)} @trace def func_76(): pickle.dumps(iter(dict_1)) func_76() -- https://mail.python.org/mailman/listinfo/python-list