Make sure to keep "technology" and "parameter" multiindex names #126
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There were a few points were the multiindex names of the
data
df got lost in dataframe concatenation operations; this eventually lead to the output files having empty columns headers for the index columns, leading to problems in pypsa-eur down the road. Were the column names added manually before or is this some regressions with a new pandas version?? Anyway, fixed with this commit.Checklist
doc
.environment.yaml
(if applicable).doc/release_notes.rst
of the upcoming release is included.