Python json.JSONEncoder() Examples

def save_result(dest_fp):
    """
        Handy function to encode result_json to json and save to file
    """
    with open(dest_fp, 'w') as output_stream:
        rawJSON = \
            json.JSONEncoder(sort_keys=True, indent=4).encode(result_json)
        output_stream.write(rawJSON) 

def default(self, obj: Any) -> Any:
        try:
            return pydantic_encoder(obj)
        except TypeError:
            pass

        if isinstance(obj, np.ndarray):
            if obj.shape:
                data = {"_nd_": True, "dtype": obj.dtype.str, "data": np.ascontiguousarray(obj).tobytes().hex()}
                if len(obj.shape) > 1:
                    data["shape"] = obj.shape
                return data

            else:
                # Converts np.array(5) -> 5
                return obj.tolist()

        return json.JSONEncoder.default(self, obj) 

def dumps(object_: Any, app: Optional["Quart"] = None, **kwargs: Any) -> str:
    json_encoder: Type[json.JSONEncoder] = JSONEncoder
    if app is None and _app_ctx_stack.top is not None:  # has_app_context requires a circular import
        app = current_app._get_current_object()

    if app is not None:
        json_encoder = app.json_encoder
        if _request_ctx_stack.top is not None:  # has_request_context requires a circular import
            blueprint = app.blueprints.get(request.blueprint)
            if blueprint is not None and blueprint.json_encoder is not None:
                json_encoder = blueprint.json_encoder
        kwargs.setdefault("ensure_ascii", app.config["JSON_AS_ASCII"])
        kwargs.setdefault("sort_keys", app.config["JSON_SORT_KEYS"])
    kwargs.setdefault("sort_keys", True)
    kwargs.setdefault("cls", json_encoder)

    return json.dumps(object_, **kwargs) 

def default(self, o):
        if types.FunctionType == type(o):
            return o.__name__
        # sets become lists
        if isinstance(o, set):
            return list(o)
        # date times become strings
        if isinstance(o, datetime):
            return o.isoformat()
        if isinstance(o, decimal.Decimal):
            return float(o)
        if isinstance(o, type):
            return str(o)
        if isinstance(o, Exception):
            return str(o)
        if isinstance(o, set):
            return str(o, 'utf-8')
        if isinstance(o, bytes):
            return str(o, 'utf-8')
        
        return json.JSONEncoder.default(self, o) 

def default(self, obj):
        if hasattr(obj, '__json__'):
            return obj.__json__()
        elif isinstance(obj, collections.Iterable):
            return list(obj)
        elif isinstance(obj, dt.datetime):
            return obj.isoformat()
        elif hasattr(obj, '__getitem__') and hasattr(obj, 'keys'):
            return dict(obj)
        elif hasattr(obj, '__dict__'):
            return {member: getattr(obj, member)
                    for member in dir(obj)
                    if not member.startswith('_') and
                    not hasattr(getattr(obj, member), '__call__')}

        return json.JSONEncoder.default(self, obj) 

def default(self, obj):
        from certidude.user import User
        if isinstance(obj, ipaddress._IPAddressBase):
            return str(obj)
        if isinstance(obj, set):
            return tuple(obj)
        if isinstance(obj, datetime):
            return obj.strftime("%Y-%m-%dT%H:%M:%S.%f")[:-3] + "Z"
        if isinstance(obj, date):
            return obj.strftime("%Y-%m-%d")
        if isinstance(obj, timedelta):
            return obj.total_seconds()
        if isinstance(obj, types.GeneratorType):
            return tuple(obj)
        if isinstance(obj, User):
            return dict(name=obj.name, given_name=obj.given_name,
                surname=obj.surname, mail=obj.mail)
        return json.JSONEncoder.default(self, obj) 

def default(self, obj):
        '''
        Convert objects unrecognized by the default encoder

        Parameters
        ----------
        obj : any
           Arbitrary object to convert

        Returns
        -------
        any
           Python object that JSON encoder will recognize

        '''
        if isinstance(obj, (float, np.float64)):
            return float(obj)
        if isinstance(obj, (long, np.int64)):
            return long(obj)
        if isinstance(obj, (int, np.int32)):
            return int(obj)
        return json.JSONEncoder.default(self, obj) 

def to_json(self, skip_empty=True, **kwargs):
        '''Return a JSON representation of the parsed file.

        The optional skip_empty argument determines whether keys
        with empty values are included in the output. Set it to
        False to see all possible object members.

        Otherwise it accepts the same optional arguments as
        json.dumps().'''
        def _make_serializable(obj):
            '''Construct a dict representation of an object.

            This is necessary to handle our custom objects
            which json.JSONEncoder doesn't know how to
            serialize.'''

            return {k: v
                    for k, v in vars(obj).items()
                    if not str(k).startswith('_') and not (
                        skip_empty and not v and not isinstance(v, Number)
                    )}

        kwargs.setdefault('indent', 2)
        kwargs.setdefault('default', _make_serializable)
        return json.dumps(self.text, **kwargs) 

def __init__(self, encoding='utf-8', skipkeys=False, ensure_ascii=True,
                 check_circular=True, allow_nan=True, sort_keys=True, indent=None,
                 separators=None, strict=True):
        self._text_encoding = encoding
        if separators is None:
            # ensure separators are explicitly specified, and consistent behaviour across
            # Python versions, and most compact representation if indent is None
            if indent is None:
                separators = ',', ':'
            else:
                separators = ', ', ': '
        separators = tuple(separators)
        self._encoder_config = dict(skipkeys=skipkeys, ensure_ascii=ensure_ascii,
                                    check_circular=check_circular, allow_nan=allow_nan,
                                    indent=indent, separators=separators,
                                    sort_keys=sort_keys)
        self._encoder = _json.JSONEncoder(**self._encoder_config)
        self._decoder_config = dict(strict=strict)
        self._decoder = _json.JSONDecoder(**self._decoder_config) 

def __export_to_json(self):
        r"""Export the results in the JSON form.

        See Also:
                * :func:`NiaPy.Runner.__createExportDir`

        """

        self.__create_export_dir()

        class NumpyEncoder(json.JSONEncoder):
            def default(self, obj):
                if isinstance(obj, ndarray):
                    return obj.tolist()
                return json.JSONEncoder.default(self, obj)

        dumped = json.dumps(self.results, cls=NumpyEncoder)

        with open(self.__generate_export_name("json"), "w") as outFile:
            json.dump(dumped, outFile)
            logger.info("Export to JSON completed!") 

def default(self, o):  # pylint: disable=method-hidden
    if isinstance(o, datetime.datetime):
      return {
          '__type__': 'datetime',
          'year': o.year,
          'month': o.month,
          'day': o.day,
          'hour': o.hour,
          'minute': o.minute,
          'second': o.second,
          'microsecond': o.microsecond,
      }
    if isinstance(o, datetime.date):
      return {
          '__type__': 'date',
          'year': o.year,
          'month': o.month,
          'day': o.day,
      }

    return json.JSONEncoder.default(self, o) 

def default(self, o):
        if hasattr(o, 'to_json'):
            return o.to_json()
        elif isinstance(o, np.int64):
            return int(o)
        elif isinstance(o, types.FunctionType):
            return get_func_name(o)  # can't JSON a function!
        else:
            return json.JSONEncoder.default(self, o) 

def print_result():
    """
        Handy function to print result_json
    """
    print(json.JSONEncoder(sort_keys=True, indent=4).encode(result_json)) 

def generate_json(model_kv):
    """
        Generates json  and prints to stdout
        model_kv is generated by parse_docstring()
        it contains the key value pair of each field
        (dict) -> None
    """
    if(type(model_kv) != dict):
        script_output("generate_json(dict), check function def")
        exit(1)

    print(json.JSONEncoder(sort_keys=True, indent=4).encode(model_kv)) 

def default(self, obj):
        """default."""
        if isinstance(obj, set):
            return list(obj)
        return json.JSONEncoder.default(self, obj) 

def default(self, obj):
        if isinstance(obj, JSONSerializable):
            return obj.__json_encode__()
        return json.JSONEncoder.default(self, obj) 

def object_hash(thing):
    class EnumEncoder(json.JSONEncoder):
        def default(self, obj):
            if isinstance(obj, enum.Enum):
                return obj.name
            return super().default(obj)
    strform = json.dumps(thing, sort_keys=True, cls=EnumEncoder)
    h = hashlib.sha1()
    h.update(strform.encode('utf-8'))
    return h.hexdigest() 

def default(self, obj):
        if isinstance(obj, datetime.date):
            return obj.isoformat()
        return json.JSONEncoder.default(obj) 

def default(self, obj: Any) -> Any:
        try:
            return pydantic_encoder(obj)
        except TypeError:
            pass

        if isinstance(obj, np.ndarray):
            if obj.shape:
                return obj.ravel().tolist()
            else:
                return obj.tolist()

        return json.JSONEncoder.default(self, obj) 

def default(self, o):
        try:
            return json.JSONEncoder.default(self, o)
        except TypeError:
            return repr(o) 

def default(self, o):
        try:
            return json.JSONEncoder.default(self, o)
        except TypeError:
            return o.__dict__ 

def default(self, o):
        if isinstance(o, set):
            return list(o)
        if isinstance(o, datetime):
            return o.isoformat()
        if isinstance(o, decimal.Decimal):
            return str(trunc(o))
        if isinstance(o, Exception):
            return str(o)
        return json.JSONEncoder.default(self, o) 

def default(self, obj):
        if isinstance(obj, datetime.datetime):
            return obj.strftime('%Y-%m-%d %H:%M:%S')
        elif isinstance(obj, date):
            return obj.strftime("%Y-%m-%d")
        else:
            return json.JSONEncoder.default(self, obj) 

def default(self, o) -> Any:
        if isinstance(o, bytes):
            return UnicodeDammit(o).unicode_markup  # type: ignore
        elif isinstance(o, datetime.datetime):
            return str(o)
        elif isinstance(o, set):
            return list(o)
        try:
            return vars(o)
        except Exception:
            pass
        return json.JSONEncoder.default(self, o) 

def __init__(self):
    json.JSONEncoder.__init__(self,
                              separators=(",", ":"),
                              ensure_ascii=False) 

def json(self) -> str:
        """
        JSON representation of a model.

        Returns
        -------
        str
            JSON representation
        """
        return JSONEncoder().encode(self) 

def default(self, o):
        if issubclass(o.__class__, ArsdkBitfield):
            return "olympe.enums." + o.__class__._feature_name_ + '.' + str(o)
        elif issubclass(o.__class__, ArsdkEnum):
            return 'olympe.enums.' + o.__class__._feature_name_ + '.' + str(o)
        elif issubclass(o.__class__, ArsdkMessage):
            return 'olympe.messages.' + o.feature_name + '.' + str(o)
        return super(JSONEncoder, self).default(o) 

def default(self, obj):
      if isinstance(obj, np.int32):
        return int(obj)
      if isinstance(obj, np.ndarray):
        return obj.tolist()
      return json.JSONEncoder.default(self, obj) 

def default(self, obj):
            if isinstance(obj, np.ndarray):
                return obj.tolist()
            if isinstance(obj, bytes):
                return obj.decode()
            return json.JSONEncoder.default(self, obj) 

def default(self, obj):
        if isinstance(obj, sqlite3.Row):
            return tuple(obj)
        if isinstance(obj, sqlite3.Cursor):
            return list(obj)
        if isinstance(obj, bytes):
            # Does it encode to utf8?
            try:
                return obj.decode("utf8")
            except UnicodeDecodeError:
                return {
                    "$base64": True,
                    "encoded": base64.b64encode(obj).decode("latin1"),
                }
        return json.JSONEncoder.default(self, obj)