Using python make a function: encode(dna), for it to accept only 1 seq. The input would be (A,T,C,G)

It should output a nested list [list1,list2,....listN], where N is the number of letters of a sequence, and each list (i) a unique list for each type of DNA letters defined as following:

• 'A', the list is [1,0,0,0]
• 'T', the list is [0,1,0,0]
• 'C', the list is [0,0,1,0]
• 'G', the list is [0,0,0,1]
• None of the letters above then it will be[0,0,0,0]