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meetups-attendees.rb

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#!/usr/bin/env ruby

# retrieve meetups attendees from lanyrd

# and print some stats

require 'rubygems'

require 'nokogiri'

require 'open-uri'

urls = []

urls << "http://lanyrd.com/2010/first-devops-meetup-paris/attendees/?page="

2.upto(7) do |i|

urls << "http://lanyrd.com/2011/paris-devops-meetup-#{i}/attendees/?page="

end

meetups = []

urls.each do |url|

attendees = []

page = 1

begin

doc = Nokogiri::HTML(open(url + page.to_s)) rescue nil

page+=1

attendees << doc.css('div.mini-profile span.name a[href]').map{|e| e['href'].gsub(/\/profile\/(.*)\//,'\1')} unless doc.nil?

end while not doc.nil?

meetups << attendees.flatten

end

people = {}

meetups.each{|m| m.each{|p| people[p].nil? ? people[p]=1 : people[p]+=1}}

people_by_participations = people.inject([]){|m,p| m[p[1]].nil? ? m[p[1]]=[p[0]] : m[p[1]]<<p[0] ; m}

puts "parisdevops meetups stats :"

puts "#{meetups.count} meetups"

puts "#{meetups.flatten.count} participations"

puts "#{people.count} participants"

puts "stats by number of participations :"

people_by_participations.each_with_index{|e,i| puts "#{i} participations : #{e.count rescue 0} people - #{(e.count rescue 0)*100/(people.count)}% (#{e.join(',') rescue ''})"}