added some basic error prevention in delete function (it could be   quite a bit better, needs to be put in a try block to prevent   crash in the case of user/coder error)
added some basic error prevention in delete function (it could be
  quite a bit better, needs to be put in a try block to prevent
  crash in the case of user/coder error)

python50/TeletypeTwitterShell,python50/TeletypeTwitterShell,python50/TeletypeTwitterShell