FutureWarning: Series.__getitem__ treating keys as positions is deprecated.

[roblatham00]

not entirely sure where this is coming from, but generated darshan reports on ALCF polaris with these python modules:

% pip list
Package             Version
------------------- ------------
cffi                1.16.0
contourpy           1.1.1
cycler              0.12.1
darshan             3.4.4.0
fonttools           4.43.1
h5py                3.10.0
humanize            4.8.0
importlib-resources 6.1.0
kiwisolver          1.4.5
Mako                1.2.4
MarkupSafe          2.1.3
matplotlib          3.8.0
mpi4py              3.1.5
numpy               1.26.1
packaging           23.2
pandas              2.1.2
Pillow              10.1.0
pip                 23.2.1
pycparser           2.21
pyparsing           3.1.1
python-dateutil     2.8.2
pytz                2023.3.post1
seaborn             0.13.0
setuptools          58.1.0
six                 1.16.0
tzdata              2023.3
zipp                3.17.0 

and got these warnings (truncating the path)

data_access_by_filesystem.py:680: FutureWarning: Series.__getitem__ treating keys as positions is deprecated. In a future version, integer keys will always be treated as labels (consistent with DataFrame behavior). To access a value by position, use `ser.iloc[pos]`
  file_rd_series[sort_inds],
data_access_by_filesystem.py:681: FutureWarning: Series.__getitem__ treating keys as positions is deprecated. In a future version, integer keys will always be treated as labels (consistent with DataFrame behavior). To access a value by position, use `ser.iloc[pos]`
  file_wr_series[sort_inds],
data_access_by_filesystem.py:682: FutureWarning: Series.__getitem__ treating keys as positions is deprecated. In a future version, integer keys will always be treated as labels (consistent with DataFrame behavior). To access a value by position, use `ser.iloc[pos]`
  bytes_rd_series[sort_inds],
data_access_by_filesystem.py:683: FutureWarning: Series.__getitem__ treating keys as positions is deprecated. In a future version, integer keys will always be treated as labels (consistent with DataFrame behavior). To access a value by position, use `ser.iloc[pos]`
  bytes_wr_series[sort_inds],

just warnings.. the plots look as expected

[shanedsnyder]

Looks like @tylerjereddy ran into this as well, and fixed as part of this PR to add support for Python 3.12: #959

Just need to get that merged

[shanedsnyder]

Closing this as #959 is now merged into main. These warnings should go away on our next release.