<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def defaults(values={}):

 """Returns a once-assembled dict of this module's storable attributes."""

    if values: return values
    save_types = basestring, int, float, tuple, list, dict, type(None)
    for k, v in globals().items():
        if isinstance(v, save_types) and not k.startswith("_"): values[k] = v
    return values