Pandas - check if ALL values are NaN in Series

Question

I have a data series which looks like this:

print mys  id_L1 2       NaN 3       NaN 4       NaN 5       NaN 6       NaN 7       NaN 8       NaN 

I would like to check is all the values are NaN.

My attempt:

pd.isnull(mys).all() 

Output:

True 

Is this the correct way to do it?

Answer 1

Yes, that's correct, but I think a more idiomatic way would be:

mys.isnull().all()