Extracting and summing student scores from a JSON file using Python 2.7.10

[wayne.wickson at gmail.com]

On Monday, 9 November 2015 22:27:40 UTC-5, Denis McMahon  wrote:
> On Mon, 09 Nov 2015 15:52:45 -0800, Bernie Lazlo wrote:
> 
> > This should be a simple problem but I have wasted hours on it. Any help
> > would be appreciated. [I have taken my code back to almost the very
> > beginning.]
> > ========================
> > The student scores need to be summed.
> > ========================
> > import json import urllib url =
> > "http://www.wickson.net/geography_assignment.json"
> > response = urllib.urlopen(url)
> > data = json.loads(response.read())
> > lst1 = list(data.items())
> > print lst1
> 
> I find that pprint.pprint is useful for looking at data structures.
> 
> Having looked at the data, and then using appropriate substitutions for 
> <something> and <keyval> in the following:
> 
> sumscore = 0
> students = 0
> 
> for dic in <something>:
>     sumscore = sumscore + dic[<keyval>]
>     students += 1
> 
> print 'Sum of', students, 'scores is', sumscore
> print 'Average of', students, 'scores is', sumscore / students
> 
> It was trivial to generate:
> 
> Sum of 50 scores is 3028
> Average of 50 scores is 60
> 
> -- 
> Denis McMahon
=========================================
Thanks for the reply, Denis. I hope this comes as easily to me some day. :-)