#
# Pretty formating helpers
#
def pretty_format_value(value, encoding='utf8'):
    if isinstance(value, dict):
        return pretty_format_dict(value)
    if isinstance(value, list):
        return ",".join([pretty_format_value(x) for x in value])
    elif isinstance(value, bytes):
        return "'%s'" % value.decode(encoding, errors='replace')
    elif isinstance(value, str):
        return "'%s'" % value
    return str(value)


def pretty_format_dict(attrs):
    result = []
    for attr in sorted(attrs.keys()):
        result.append(" - %s : %s" % (attr, pretty_format_value(attrs[attr])))
    return "\n".join(result)


def pretty_format_list(row):
    result = []
    for idx, values in enumerate(row):
        result.append(" - #%s : %s" % (idx, pretty_format_value(values)))
    return "\n".join(result)