dusual

function abc() {
  var deferred = $.Deferred();

  (function() {
    var a = 1;
    deferred.resolve(a);
  })();

  return deferred.promise();
}

dusual

mkdir heroku
cd heroku/
virtualenv --no-site-packages env
source env/bin/activate
pip install bottle gevent
pip freeze > requirements.txt

cat >app.py <<EOF
try:
    import gevent.monkey