Issue with country code about entsog-py HOT 1 OPEN

Hi @ClareO9,

Thanks for using the package.

The issue you have encountered is due to me not having updated the documentation.

I have removed the country functionality a while back due to the ENTSOG API requiring either an operator or a pointdirection parameter, but not a country key. Therefore, I had to iterate through operators within an country which was very error prone. Therefore, I decided it would be better to retrieve simply all data instead.

It's still possible to retrieve only the point_directions from the Netherlands. You will need to get the full list of direction keys from the other API endpoints. However, I recommend that you should obtain the full operational_point_data, that is do not enter point_direction, as this additional parameter is also somewhat error prone (especially if you have more than 50 point direction keys).

keys = ... # Dutch pointdirecton keys
data = client.query_operational_point_data(start = start, end = end, indicators = ['physical_flow'], point_directions = keys, verbose = False)
# Preferred:
data = client.query_operational_point_data(start =start, end = end, indicators = ['physcal_flow'])
# Filter afterward

from entsog-py.