Check if object exists

Thanks for the responses,

I get it, i must use a Wait function to check if the object exists without waiting the full 10 seconds.

Is there a way to extract the alias name from a given object?

I want to do something like this

def wait(obj)

  parent = obj.parent

  aliasName = obj.?????

  if parent.WaitChildAlias(aliasName, 0).Exists:

     return True

  return False

and call it in the script like this:

exist = wait(Aliases.MyApp.Dialog1)

Is it possible to do such a function which returns if the object exists without waitiing and passing only the object?