DIR api
  TEXT extensions.rst.txt
  TEXT frame.rst.txt
  TEXT general_functions.rst.txt
  TEXT groupby.rst.txt
  TEXT index.rst.txt
  TEXT indexing.rst.txt
  TEXT io.rst.txt
  TEXT ml.rst.txt
  TEXT options.rst.txt
  TEXT resampling.rst.txt
  TEXT series.rst.txt
  TEXT testing.rst.txt
  TEXT window.rst.txt