rate-o-rama.py

#!/usr/bin/env python
categories = ['House', 'Car', 'Work', 'Family', 'Eating', 'Drinking']
i = 0
rateable_tasks = [] 
for category in categories: 
    for i in xrange(0, 5):
        rateable_task = 'Some task that pertains to this category #%s'
        rateable_tasks.append({ 'name': rateable_task % i, 'category': category })

# Let's add one extra rateable taskon to make 31 tasks:
rateable_tasks.append({ 
    'name': 'One final task to make up the numbers',
    'category': 'Drinking',
})

# Example, trying to calculate an overall average rating 
# for November which has only 30 days
# People rate themselves on a 1-6 scale
number_of_days_in_november = 30
ratings = []
for i in xrange(0, number_of_days_in_november):
    ratings.append({
        'rating': 6,
        'task': rateable_tasks[i]['name'],
        'category': rateable_tasks[i]['category']
    })

# See how many they could have rated
drinking_related_tasks = [ task for task in rateable_tasks if task['category'] == 'Drinking' ]
num_drinking_related_tasks = len(drinking_related_tasks)

# Calculate the average
drinking_ratings = [ rating['rating'] for rating in ratings if rating['category'] == 'Drinking' ]

average_drinking_rating = sum(drinking_ratings) / num_drinking_related_tasks
print "Your average score for drinking was: %s" % average_drinking_rating