[BUG] Dill dumps the python implementation by-value #88
Description
OS version: Ubuntu 22.04.3 LTS
Python3 version: Python 3.11.6 | packaged by conda-forge | (main, Oct 3 2023, 10:40:35) [GCC 12.3.0]
In [7]: dill.dumps(frozendict.frozendict(a=1))
Out[7]: b'\x80\x04\x95\xe6b\x00\x00\x00\x00\x00\x00\x8c\ndill._dill\x94\x8c\x0c_create_type\x94\x93\x94(h\x00\x8c\n_load_type\x94\x93\x94\x8c\x04type\x94\x85\x94R\x94\x8c\nfrozendict\x94h\x04\x8c\x04dict\x94\x85\x94R\x94\x85\x94}\x94(\x8c\n__module__\x94\x8c\x0ffrozendict.core\x94\x8c\x07__doc__\x94\x8c\xac\n A simple immutable dictionary.\n \n The API is the same as `dict`, without methods that can change the \n immutability. In addition, it supports __hash__().\n \x94\x8c\t__slots__\x94\x8c\x05_hash\x94\x85\x94\x8c\x08fromkeys\x94h\x04\x8c\x0bclassmethod\x94\x85\x94R\x94h\x00\x8c\x10_create_function\x94\x93\x94(h\x00\x8c\x0c_create_code\x94\x93\x94(C\x02\x02\x06\x94K\x01K\x00K\x00K\x03K\x07K\x0fC6\x97\x00\x02\x00|\x00t\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00j\x01\x00\x00\x00\x00\x00\x00\x00\x00|\x01i\x00|\x02\xa4\x01\x8e\x01\xa6\x01\x00\x00\xab\x01\x00\x00\x00\x00\x00\x00\x00\x00S\x00\x94\x8c/\n Identical to dict.fromkeys().\n \x94\x85\x94h\th\x15\x86\x94\x8c\x03cls\x94\x8c\x04args\x94\x8c\x06kwargs\x94\x87\x94\x8c-/home/amorton/aq/research3/frozendict/core.py\x94h\x15\x8c\x13frozendict.fromkeys\x94K\x16C#\x80 <truncated>This is because dill is attempting to locate the module member and cannot, so it assumes it must also send the type itself over the wire.
Two possible solutions are:
- The same fix as proposed in [BUG] Python implementation pickles differently than native implementation #87
- Removing
del corefrom__init__.py
Expected output (depending on solution):
In [3]: dill.dumps(frozendict.frozendict(a=1))
Out[3]: b'\x80\x04\x95\x1f\x00\x00\x00\x00\x00\x00\x00\x8c\nfrozendict\x94h\x00\x93\x94}\x94\x8c\x01a\x94K\x01s\x85\x94R\x94.'or
In [3]: dill.dumps(frozendict.frozendict(a=1))
Out[3]: b'\x80\x04\x95/\x00\x00\x00\x00\x00\x00\x00\x8c\x0ffrozendict.core\x94\x8c\nfrozendict\x94\x93\x94}\x94\x8c\x01a\x94K\x01s\x85\x94R\x94.'