TypeError: Can't instantiate abstract class Euclidean with abstract methods get_metric, score_pairs

[Alexloveanna]

I follow your steps ,but I don't know how to deal with this problem,

[HenryZhangJianhe]

this link show me that I should uses metric_learn==0.3.0.
lsongx/DomainAdaptiveReID#6

but I used 0.3.0, or 0.4.0 to run and got another error :ImportError: cannot import name 'graph_lasso'

And if I use 0.5.0, 0.6.0, I still got error same as title.

[HenryZhangJianhe]

I fixd it as follow step
scikit-learn 0.20.0
metric-learn 0.4.0