500 error posting ClassifierChain model about chantilly HOT 3 CLOSED

Thanks for opening the issue, I'll look into it.

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I just tried to dill it to file and load it again and also received an error.

Traceback (most recent call last): File "classify_sample.py", line 56, in <module> model = dill.load(f) File "/usr/local/lib/python3.6/dist-packages/dill/_dill.py", line 270, in load return Unpickler(file, ignore=ignore, **kwds).load() File "/usr/local/lib/python3.6/dist-packages/dill/_dill.py", line 472, in load obj = StockUnpickler.load(self) TypeError: __init__() missing 1 required positional argument: 'model'

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Okay I found and fixed the bug. It's because ClassifierChain inherited from collections.OrderedDict, which isn't meant to be subclassed. It now inherits from collections.UserDict and everything works fine. I've also added a series of unit tests to make sure this never happens again.

The fix will be available in the next creme release. For the moment you can simply install the master branch, which is stable, by running pip install git+https://github.com/creme-ml/creme --upgrade.

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