def JoinLists(**args):
  out = {}
  for key, val in args.items():
    if val:
      out[key] = StrJoin(JOIN_DELIMS[key], val)
    else:
      out[key] = ''
  return out
Take a dictionary of {long_name:values}, and join the values.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/_internal/graphy/backends/google_chart_api/util.py/JoinLists