tqdm is not serializable?

[mishadr]

dill 0.3.7
tqdm 4.66.1
When I try to serialize tqdm object:

from dill import dumps, loads
from tqdm import tqdm

b = dumps(tqdm())
print(loads(b))

I get a RecursionError:

0it [00:00, ?it/s]
Traceback (most recent call last):
  File "/home/misha/workspace/gnn_interpretation/src/experiments/tqdm_bug.py", line 5, in <module>
    print(loads(b))
  File "/home/misha/workspace/gnn_interpretation/venv/lib/python3.8/site-packages/dill/_dill.py", line 301, in loads
    return load(file, ignore, **kwds)
  File "/home/misha/workspace/gnn_interpretation/venv/lib/python3.8/site-packages/dill/_dill.py", line 287, in load
    return Unpickler(file, ignore=ignore, **kwds).load()
  File "/home/misha/workspace/gnn_interpretation/venv/lib/python3.8/site-packages/dill/_dill.py", line 442, in load
    obj = StockUnpickler.load(self)
  File "/home/misha/workspace/gnn_interpretation/venv/lib/python3.8/site-packages/tqdm/utils.py", line 139, in __getattr__
    return getattr(self._wrapped, name)
  File "/home/misha/workspace/gnn_interpretation/venv/lib/python3.8/site-packages/tqdm/utils.py", line 139, in __getattr__
    return getattr(self._wrapped, name)
  File "/home/misha/workspace/gnn_interpretation/venv/lib/python3.8/site-packages/tqdm/utils.py", line 139, in __getattr__
    return getattr(self._wrapped, name)
  [Previous line repeated 992 more times]
RecursionError: maximum recursion depth exceeded
Exception ignored in: <function tqdm.__del__ at 0x7ff5ade079d0>
Traceback (most recent call last):
  File "/home/misha/workspace/gnn_interpretation/venv/lib/python3.8/site-packages/tqdm/std.py", line 1149, in __del__
    self.close()
  File "/home/misha/workspace/gnn_interpretation/venv/lib/python3.8/site-packages/tqdm/std.py", line 1268, in close
    if self.disable:
AttributeError: 'tqdm' object has no attribute 'disable'

This could be connected to AttributeError: 'tqdm' object has no attribute '' #487 , but the issue seems to be solved.

[Mike McKerns]

It would seem there's a recursive reference pointer of some kind. You can, at first blush, try increasing the max recursion depth, or you can try using dill.settings['recurse'] = True (which changes the recursion behavior in globals during serialization).

[mishadr]

Thanks for the reply, but that doesn't help..

[Mike McKerns]

Ok, if that's the case, thentdqm.tdqm is not serializable.

[Mike McKerns]

Probably the most appropriate thing to do is for the tqdm class to add a __reduce__ method or some other state-capturing method for serialization. I'm closing this, but feel free to reopen if you feel your question hasn't been answered.