Hi @Pololnger,
try this:
fig = px.choropleth_mapbox(df, geojson=geo, locations='id', color='a', featureidkey="properties.cca_2",
hover_name = 'Location_Name', hover_data = {'a':True,'b':True, 'c':True, 'id':False}
it is written in the help:
hover_data: list of str or int, or Series or array-like, or dict
Either a list of names of columns in `data_frame`, or pandas Series, or
array_like objects or a dict with column names as keys, with values
True (for default formatting) False (in order to remove this column**
from hover information)**, or a formatting string, for example ':.3f' or
'|%a' or list-like data to appear in the hover tooltip or tuples with a
bool or formatting string as first element, and list-like data to
appear in hover as second element Values from these columns appear as
extra data in the hover tooltip.
hope this helps , Alex-