Raise warning when saving DataFramePackage would overwrite existing data

rl-institut / oemoflex

A flexible model structure for creating and analysing multi-regional sector-integrated energy systems with oemof featuring many flexibility options.

https://oemoflex.readthedocs.io

GNU Affero General Public License v3.0

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Raise warning when saving DataFramePackage would overwrite existing data #38

Closed jnnr closed 3 years ago

jnnr commented 3 years ago

This PR adds a warning to the method DataFramePackage.to_csv that is raised when the target directory is not empty. To write to the directory anyway, the user can explicitly pass overwrite=True.