def UpdateIterable(o, ki, value=None, default=None, op=None):
  if default is not None and ki not in o:
    o[ki] = default

  if op is not None:
    new_v = op(o[ki], value)
    if new_v is not None:
      value = new_v
    else:
      value = None

  if value is not None:
    o[ki] = value
Test if static files are served.
dataset/ETHPy150Open google/simian/src/simian/mac/munki/plist.py/UpdateIterable--crossover with--dataset/ETHPy150Open pympler/pympler/test/gui/test_web.py/WebGuiTest.test_static_files