I tried this patch with attached script.

```
$ venv/bin/pip install django flask sqlalchemy
$ PYTHONTRACEMALLOC=5 venv/bin/python3 tuplemem.py > tuples.txt
$ sort tuples.txt | uniq -c | sort -nr > tuplecount
```

## default
memory: (32254693, 32292635)
tuples: 64968

head -n10 tuplecount-default
   5479 (None,)
   3069 ('self',)
    727 (<class 'object'>,)
    688 ('__class__',)
    321 ('NotImplementedError',)
    287 ('self', 'other')
    264 (None, None)
    207 (False,)
    193 (None, 0)
    176 (None, False)

## patched
memory: (31224697, 31261892)
tuples: 51298

head -n10 tuplecount-patched
   1437 (None,)
    727 (<class 'object'>,)
    328 ('self',)
    264 (None, None)
    207 (False,)
    193 (None, 0)
    138 ('__class__',)
    114 (True,)
    112 (None, False)
    110 ('target', 'fn')


I'll try again with my company's private codebase in next week.