Write a Python program that prints "Yes" if the sequence "AACCGT"
is found in the file dna.txt in FASTA format. 

For example if the file contains 

>human
AACCGT
>mouse
AGTTATATA
>cat
AGT
>dog
GTGTATA

then the output should be 

Yes. 

But if the input is 

>human
TAACCGT
>mouse
AGTTATATA
>cat
AGT

or 

>human
GTAA
>mouse
AGTTATATA
>cat
AGT

then your program should output "No".

Your program should work for any number of sequences and not just the 
given example.

Submit a hardcopy in class on Sept 26th.