shazow

def get_many(d, required=[], optional=[], one_of=[]):
    """
    Returns a predictable number of elements out of `d` in a list for auto-expanding.

    Keys in `required` will raise KeyError if not found in `d`.
    Keys in `optional` will return None if not found in `d`.
    Keys in `one_of` will raise KeyError if none exist, otherwise return the first in `d`.

    Example usage: