Check if pandas column contains all elements from a list

Question

I have a df like this:

frame = pd.DataFrame({\'a\' : [\'a,b,c\', \'a,c,f\', \'b,d,f\',\'a,z,c\']})

And a list of items:

let         


        

Answer 1

Use set.issubset:

frame = pd.DataFrame({'a' : ['a,b,c', 'a,c,f', 'b,d,f','a,z,c','x,y']})
letters = ['a','c']

frame[frame['a'].apply(lambda x: set(letters).issubset(x))]

Out:

       a
0  a,b,c
1  a,c,f
3  a,z,c