[bug] ets undefined

[KS-HTK]

Bug report checklis

• Searched the issues page for similar reports

• Read the relevant sections of the documentation

• Browse the tutorials and tests for usefull code snippets and examples of use

• Reproduced the issue after updating with pip install --upgrade pandapower (or git pull)

• Tried basic troubleshooting (if a bug/error) like restarting the interpreter and checking the pythonpath

Reproducible Example

from pandapower.auxiliary import element_types_to_ets

element_types_to_ets(element_types='line')

Issue Description and Traceback

The function uses a variable name that is never defined.

What purpose does the function serve? It was added in January but apperently never used since then, this Issue should be raised for any string passed to the function.

Expected Behavior

No error.
Any maybe a Test that fails

Installed Versions

develop
Issue is present since function was originally added to pandapower in January 24.

Label

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[KS-HTK]

@SteffenMeinecke