1 science = {}

     2 

     3 for record in open('sslc1.txt'):

     4     record = record.strip()

     5     fields = record.split(';')

     6 

     7     region_code = fields[0].strip()

     8 

     9     if region_code not in science:

    10         science[region_code] = 0

    11 

    12     score_str = fields[6].strip()

    13 

    14     score = int(score_str) if score_str != 'AA' else 0

    15 

    16     if score > 90:

    17         science[region_code] += 1

    18 

    19 figure(1)

    20 pie(science.values(), labels=science.keys())

    21 title('Students scoring 90% and above in science by region')

    22 savefig('science.png')