Access a group of rows by label(s) or a boolean array.
.loc is primarily label based, but may also be used with a
If the selection result is a Series, Woodwork typing information will
be initialized for the returned Series.
A single label, e.g. 5 or 'a', (note that 5 is
interpreted as a label of the index, and never as an
integer position along the index).
A list or array of labels, e.g. ['a', 'b', 'c'].
A slice object with labels, e.g. 'a':'f'.
A boolean array of the same length as the axis being sliced,
e.g. [True, False, True].
An alignable boolean Series. The index of the key will be aligned before
An alignable Index. The Index of the returned selection will be the input.
A callable function with one argument (the calling Series or
DataFrame) and that returns valid output for indexing (one of the above)
['a', 'b', 'c']
[True, False, True]