How can I drop rows in data frames which contains empty lists?

Question

I have created a data frame with 3 columns, the third one contains lists, I want to drop rows that contains an empty list in that cell.

I have tried with

df[df.numbers == []] and df[df.numbers == null]
but nothing works. 

name    country    numbers

Lewis   Spain      [1,4,6]
Nora    UK         []
Andrew  UK         [3,5]

The result will be a data frame without Nora's row

Answer 1

Umm check bool

df[df.numbers.astype(bool)]