Get value at specific path in dictionary. Path is specified by slash-
    separated string, eg _get_path(foo, 'bar/baz') returns foo['bar']['baz']

def _get_path(dict_, path):
    '''
    Get value at specific path in dictionary. Path is specified by slash-
    separated string, eg _get_path(foo, 'bar/baz') returns foo['bar']['baz']
    '''
    cur = dict_
    for part in path.split('/'):
        cur = cur[part]
    return cur