How can I remove Nan from list Python/NumPy

Question

I have a list that countain values, one of the values I got is \'nan\'

countries= [nan, \'USA\', \'UK\', \'France\']

I tried to remove it,

Answer 1

Another way to do it would include using filter like this:

countries = list(filter(lambda x: str(x) != 'nan', countries))