ENH: Enhanced the problem set building on the image handing and arrays.
Illustrated dtypes, casting and their importance along with an example
using RGBA images. Also introduce edge detection.
science = {}
for record in open('sslc1.txt'):
# record = record.strip()
fields = record.split(';')
region_code = fields[0].strip()
score_str = fields[6].strip()
score = int(score_str) if score_str != 'AA' else 0
if score > 90:
science[region_code] += 1
figure(1)
pie(science.values(), labels=science.keys())
title('Students scoring 90% and above in science by region')
savefig('/tmp/science.png')