Feature/config

[FBumann]

Adding a CONFIG to flixOpt

To control central behaviour of flixOpt without hard coding it, we introduce a CONFIG.
a default config is provided and loaded when importing the package.
The values are validated on import.
CUrrently there are Configs for:

Logging

• logging_level
• logging_file
• rich: use the rich logging (for terminal formatting)

modeling

• BIG
• EPSILON
• BIG_BINARY_BOUND

If the user desires to change these values, he has to provide his own config_file.

import flixOpt as fx

import numpy as np

if __name__ == '__main__':
    fx.CONFIG.load_config('new_config.yaml')
    # --- Define Thermal Load Profile ---
    # Load profile (e.g., kW) for heating demand over time
    thermal_load_profile = np.array([30., 0., 20.])
    ...

This has to be done at the beginning of your script, to work as expected.
This is currently the only way to reliably change the config values!

To change the logging level without a config file, use the existing function:

fx.change_logging_level('DEBUG')