def normalize_dict(dict_):
return dict([(k, v[<NUM_LIT:0>] if not isinstance(v, str) and len(v) == <NUM_LIT:1> else v)<EOL>for k, v in list(dict_.items())])<EOL>
Replaces all values that are single-item iterables with the value of its
index 0.

:param dict dict_:
    Dictionary to normalize.

:returns:
    Normalized dictionary.