Pickling tsgroup

[BalzaniEdoardo]

Description

This PR solves the issue of infinite recursion for the pickling of "TsGroup".

Raises an error if __getattr__ is called by the __reduce__ and __reduce_ex__ methods.

These are attributes of the pandas.Index, which are the column names of the metadata, that would be called by captured by the __getattr__ implementation otherwise, generating an infinite recursion.

New Capability

This two line now do not generate an infinite recursion.

import pickle
#...assume tsgroup is a TsGroup
pickled_tsgroup = pickle.dumps(tsgroup)
unpickled_tsgroup = pickle.loads(pickled_tsgroup)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files	Coverage Δ
pynapple/core/ts_group.py	92.05% <100.00%> (+0.03%)	⬆️

[gviejo]

Favoloso!