Write a Python script that scores a query sequence against every
sequence in a database file and prints its Needleman-Wunsch (NW) 
alignment score. The high level pseudocode would be

1. Read data from query.txt and database.txt.
2. Loop through each entry of the database as follows:

   for i = 0 to length of database {

     (a) Compute NW score of query against the ith 
         sequence of the database.
     (b) Print the NW score computed in step (a).

   }

Sequences in query.txt and database.txt are in FASTA format.
Submit hardcopies of your program in class on Mar 15th, 2013.