Write a Python program that prints the longest DNA sequence and its name
from a set given in FASTA format. 

For example if the input in the file dna.fasta is

>A
ACCGTA
>B
ACCGTAACCTTG
>C
TCCTATAA
>D
ACC
>E
ACACAGTTTGCGCGCGCGGGG
>F
GCTTTAAAAAGGCAA
>G
ATGTA
>H
GCGCCCCCCA

then the program should print 

>E
ACACAGTTTGCGCGCGCGGGG

Your program should work for any input file and not just this example.

Submit a hardcopy in class on Oct 19th.