REF: separate flex from non-flex DataFrame ops by jbrockmendel · Pull Request #36843 · pandas-dev/pandas (original) (raw)

"flex" methods are all the non-dunder arith/cmp ops: add, sub, eq, ne, ...

The user facing change is that frame.__and__(other, axis=0, fill_value= ...), or other dunder methods non-idiomatically accepting kwargs. The potential trouble is that for &|^, there are no non-dunder versions with the kwarg support.