<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def decode(data, encoding='utf-8', errors='strict'):
 """We need to convert a dictionary where keys and values are bytes, to unicode strings. This happens when a Python 2 worker sends a dictionary back to a Python 3 master. """

    data_type = type(data)

    if data_type == bytes:
        return bytes2unicode(data, encoding, errors)
    if data_type in (dict, list, tuple):
        if data_type == dict:
            data = data.items()
        return data_type(map(decode, data))
    return data