Support multiple days forecasting with CSV data.

[nielskool]

With CSV data as input for prices, the forecasting broke if it was more than 1 day.

With the updated code, only csv data for the day that is being forcasted is taken.

File "/app/src/emhass/forecast.py", line 849, in get_forecast_out_from_csv_or_list forecast_out = pd.DataFrame( ^^^^^^^^^^^^^ File "/app/.venv/lib/python3.12/site-packages/pandas/core/frame.py", line 827, in __init__ mgr = ndarray_to_mgr( ^^^^^^^^^^^^^^^ File "/app/.venv/lib/python3.12/site-packages/pandas/core/internals/construction.py", line 336, in ndarray_to_mgr _check_values_indices_shape_match(values, index, columns) File "/app/.venv/lib/python3.12/site-packages/pandas/core/internals/construction.py", line 420, in _check_values_indices_shape_match raise ValueError(f"Shape of passed values is {passed}, indices imply {implied}") ValueError: Shape of passed values is (52, 1), indices imply (26, 1)

[davidusb-geek]

Hi thanks for contributing.
What if we want to forecast several days, is this compatible?

[nielskool]

I tested with 1,2 and 3 days forecasting. that worked now. Earlier only 1 day worked.
So it does forecasting per day on line 809 and now per day it only takes the relevant part of the csv data.
if you forecast multiple days it will take for each day the relevant part of the csv.

[nielskool]

i checked the failingtest. I have almost an update ready that makes the first column of the csv actually used as a date column, current code ignores the date in the first column in the csv.

The test now failes, because the provided sample csv does not match.
So the update will have 2 things, make the first column the date index column(if available)
and update the dates in the provided csv to match the requested forcasting

[nielskool]

dont accept this request yet. i am actually doing some extra tests still. although the included tests suceeed, i want to verify it myself still

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[nielskool]

Made one more change to make sure that the time format is actually taking into account the +01:00 part.
tested on my side. For me this works.

[davidusb-geek]

Thanks for contributing to this, merging