technologies = {

'A': ['Angular.js', 'Apache', 'Agda', 'Accumulo'],

'B': ['Backbone.js', 'Bootstrap', 'Brython'],

'C': ['C++', 'C#', 'Coldfusion', 'Clojure', 'Couchbase', 'Cassandra', 'CentOS'],

'D': ['Dart', 'D', 'Django', 'Docker', 'DynamoDB', 'Dojo.js', 'Debian'],

'E': ['Ember.js', 'Erlang', 'Elm', 'Elixir', 'Express.js'],

'F': ['F#', 'Flask', 'Frege', 'FoundationDB', 'Fedora'],

'G': ['Go', 'Grunt.js', 'Gulp.js', 'Gentoo'],

'H': ['Haskell', 'Hadoop', 'Hapi.js', 'Hive', 'HyperDex', 'HBase'],

'I': ['Io.js', 'Idris', 'Io', 'InfluxDB'],

'J': ['Julia', 'Java', 'Jython', 'JRuby', 'jQuery'],

'K': ['Knockout.js', 'Kotlin', 'Kinesis', 'Kubuntu'],

'L': ['Linux', 'Lisp', 'Lua', 'Laravel'],

'M': ['Marionette.js', 'MongoDB', 'MySQL', 'MariaDB', 'Memcached'],

'N': ['Node.js', 'Neo4J'],

'O': ['OCaml', 'Oracle', 'Objective C'],

'P': ['Phoenix', 'Postgres', 'Python', 'Pig'],

'Q': ['Qubes'],

'R': ['Ruby', 'R', 'Rust', 'RethinkDB', 'RavenDB', 'Riak', 'Redis', 'Red Hat'],

'S': ['Scala', 'Spring', 'Sqlite', 'SQL Server', 'Swift', 'Smalltalk', 'Spark'],

'T': ['Tcl', 'Tomcat'],

'U': ['Ubuntu', 'UNIX'],

'V': ['Vagrant', 'Vert.x', 'Visual Basic'],

'W': ['Wordpress', 'Windows'],

'X': ['XML', 'XSLT', 'Xubuntu'],

'Y': ['YARN'],

'Z': ['Zookeeper', 'Zuul'],

}

from random import randint

def get_stack_for_letter(letter):

potential_technologies = technologies[letter]

num_technologies = len(potential_technologies)

idx = randint(0, num_technologies - 1)

return potential_technologies[idx]