LGTM Alert regarding hash and eq

[onlinejudge95]

We currently have a LGTM alert. The class defines a __hash__ method without defining an __eq__ method.

According to Python docs

If a class does not define an eq() method it should not define a hash() operation either; if it defines eq() but not hash(), its instances will not be usable as items in hashable collections.

Should we go ahead with a PR for the same?

[cclauss]

Is there documentation or an issue on the LGTM community that explains why this rule exists. I have never heard of it before.

[cclauss]

Yes. Please submit a PR.

[onlinejudge95]

Also, I could see certain other issues that are legit.
Should I raise PR for similar types of issues clubbed together, rather than each going on a separate PR. What do you suggest?