<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _signInfo(obj):
 """ Appends the sign id and longitude to an object. """

    lon = obj['lon']
    obj.update({
        'sign': const.LIST_SIGNS[int(lon / 30)],
        'signlon': lon % 30
    })