Tutorial - Getting Started: find a better example for [start:] in selection

[alixdamman]

See

>>> population[:'18-66', 2017:]

  age  gender\time  2017
  0-9       female   634
  0-9         male   664
10-17       female   491
10-17         male   516
18-66       female  3583
18-66         male  3616

in selecting subset

[gdementen]

for our future selves, the problem is that 2017 is the last label, so the None upper bound does not select anything