(self, skipkeys=False, ensure_ascii=True,
                 check_circular=False, allow_nan=True, sort_keys=False,
                 indent=None, separators=None, encoding='utf-8', default=None,
                 use_decimal=True, namedtuple_as_object=True,
                 tuple_as_array=True, bigint_as_string=False,
                 item_sort_key=None, for_json=True, ignore_nan=False,
                 int_as_string_bitcount=None)
Constructor for JSONEncoder, with sensible defaults.

        If skipkeys is false, then it is a TypeError to attempt
        encoding of keys that are not str, int, long, float or None.  If
        skipkeys is True, such items are simply skipped.

        If ensure_ascii is true, the output is guaranteed to be str
        objects with all incoming unicode characters escaped.  If
        ensure_ascii is false, the output will be unicode object.

        If check_circular is true, then lists, dicts, and custom encoded
        objects will be checked for circular references during encoding to
        prevent an infinite recursion (which would cause an OverflowError).
        Otherwise, no such check takes place.

        If allow_nan is true, then NaN, Infinity, and -Infinity will be
        encoded as such.  This behavior is not JSON specification compliant,
        but is consistent with most JavaScript based encoders and decoders.
        Otherwise, it will be a ValueError to encode such floats.

        If sort_keys is true, then the output of dictionaries will be
        sorted by key; this is useful for regression tests to ensure
        that JSON serializations can be compared on a day-to-day basis.

        If indent is a string, then JSON array elements and object members
        will be pretty-printed with a newline followed by that string repeated
        for each level of nesting. ``None`` (the default) selects the most compact
        representation without any newlines. For backwards compatibility with
        versions of simplejson earlier than 2.1.0, an integer is also accepted
        and is converted to a string with that many spaces.

        If specified, separators should be an (item_separator, key_separator)
        tuple.  The default is (', ', ': ') if *indent* is ``None`` and
        (',', ': ') otherwise.  To get the most compact JSON representation,
        you should specify (',', ':') to eliminate whitespace.

        If specified, default is a function that gets called for objects
        that can't otherwise be serialized.  It should return a JSON encodable
        version of the object or raise a ``TypeError``.

        If encoding is not None, then all input strings will be
        transformed into unicode using that encoding prior to JSON-encoding.
        The default is UTF-8.

        If use_decimal is true (not the default), ``decimal.Decimal`` will
        be supported directly by the encoder. For the inverse, decode JSON
        with ``parse_float=decimal.Decimal``.

        If namedtuple_as_object is true (the default), objects with
        ``_asdict()`` methods will be encoded as JSON objects.

        If tuple_as_array is true (the default), tuple (and subclasses) will
        be encoded as JSON arrays.

        If bigint_as_string is true (not the default), ints 2**53 and higher
        or lower than -2**53 will be encoded as strings. This is to avoid the
        rounding that happens in Javascript otherwise.

        If int_as_string_bitcount is a positive number (n), then int of size
        greater than or equal to 2**n or lower than or equal to -2**n will be
        encoded as strings.

        If specified, item_sort_key is a callable used to sort the items in
        each dictionary. This is useful if you want to sort items other than
        in alphabetical order by key.

        If for_json is true (not the default), objects with a ``for_json()``
        method will use the return value of that method for encoding as JSON
        instead of the object.

        If *ignore_nan* is true (default: ``False``), then out of range
        :class:`float` values (``nan``, ``inf``, ``-inf``) will be serialized
        as ``null`` in compliance with the ECMA-262 specification. If true,
        this will override *allow_nan*.
Constructor for JSONEncoder, with sensible defaults.
Constructor for JSONEncoder with sensible defaults .
def __init__(self, skipkeys=False, ensure_ascii=True,
                 check_circular=False, allow_nan=True, sort_keys=False,
                 indent=None, separators=None, encoding='utf-8', default=None,
                 use_decimal=True, namedtuple_as_object=True,
                 tuple_as_array=True, bigint_as_string=False,
                 item_sort_key=None, for_json=True, ignore_nan=False,
                 int_as_string_bitcount=None):
        """Constructor for JSONEncoder, with sensible defaults.

        If skipkeys is false, then it is a TypeError to attempt
        encoding of keys that are not str, int, long, float or None.  If
        skipkeys is True, such items are simply skipped.

        If ensure_ascii is true, the output is guaranteed to be str
        objects with all incoming unicode characters escaped.  If
        ensure_ascii is false, the output will be unicode object.

        If check_circular is true, then lists, dicts, and custom encoded
        objects will be checked for circular references during encoding to
        prevent an infinite recursion (which would cause an OverflowError).
        Otherwise, no such check takes place.

        If allow_nan is true, then NaN, Infinity, and -Infinity will be
        encoded as such.  This behavior is not JSON specification compliant,
        but is consistent with most JavaScript based encoders and decoders.
        Otherwise, it will be a ValueError to encode such floats.

        If sort_keys is true, then the output of dictionaries will be
        sorted by key; this is useful for regression tests to ensure
        that JSON serializations can be compared on a day-to-day basis.

        If indent is a string, then JSON array elements and object members
        will be pretty-printed with a newline followed by that string repeated
        for each level of nesting. ``None`` (the default) selects the most compact
        representation without any newlines. For backwards compatibility with
        versions of simplejson earlier than 2.1.0, an integer is also accepted
        and is converted to a string with that many spaces.

        If specified, separators should be an (item_separator, key_separator)
        tuple.  The default is (', ', ': ') if *indent* is ``None`` and
        (',', ': ') otherwise.  To get the most compact JSON representation,
        you should specify (',', ':') to eliminate whitespace.

        If specified, default is a function that gets called for objects
        that can't otherwise be serialized.  It should return a JSON encodable
        version of the object or raise a ``TypeError``.

        If encoding is not None, then all input strings will be
        transformed into unicode using that encoding prior to JSON-encoding.
        The default is UTF-8.

        If use_decimal is true (not the default), ``decimal.Decimal`` will
        be supported directly by the encoder. For the inverse, decode JSON
        with ``parse_float=decimal.Decimal``.

        If namedtuple_as_object is true (the default), objects with
        ``_asdict()`` methods will be encoded as JSON objects.

        If tuple_as_array is true (the default), tuple (and subclasses) will
        be encoded as JSON arrays.

        If bigint_as_string is true (not the default), ints 2**53 and higher
        or lower than -2**53 will be encoded as strings. This is to avoid the
        rounding that happens in Javascript otherwise.

        If int_as_string_bitcount is a positive number (n), then int of size
        greater than or equal to 2**n or lower than or equal to -2**n will be
        encoded as strings.

        If specified, item_sort_key is a callable used to sort the items in
        each dictionary. This is useful if you want to sort items other than
        in alphabetical order by key.

        If for_json is true (not the default), objects with a ``for_json()``
        method will use the return value of that method for encoding as JSON
        instead of the object.

        If *ignore_nan* is true (default: ``False``), then out of range
        :class:`float` values (``nan``, ``inf``, ``-inf``) will be serialized
        as ``null`` in compliance with the ECMA-262 specification. If true,
        this will override *allow_nan*.

        """

        self.skipkeys = skipkeys
        self.ensure_ascii = ensure_ascii
        self.check_circular = check_circular
        self.allow_nan = allow_nan
        self.sort_keys = sort_keys
        self.use_decimal = use_decimal
        self.namedtuple_as_object = namedtuple_as_object
        self.tuple_as_array = tuple_as_array
        self.bigint_as_string = bigint_as_string
        self.item_sort_key = item_sort_key
        self.for_json = for_json
        self.ignore_nan = ignore_nan
        self.int_as_string_bitcount = int_as_string_bitcount
        if indent is not None and not isinstance(indent, string_types):
            indent = indent * ' '
        self.indent = indent
        if separators is not None:
            self.item_separator, self.key_separator = separators
        elif indent is not None:
            self.item_separator = ','
        if default is not None:
            self.default = default
        self.encoding = encoding

        if self.check_circular:
            self.markers = {}
        else:
            self.markers = None

        if self.ensure_ascii:
            self._encoder = encode_basestring_ascii
        else:
            self._encoder = encode_basestring

        if self.encoding != 'utf-8':
            def _encoder(o, _orig_encoder=self._encoder, _encoding=self.encoding):
                if isinstance(o, binary_type):
                    o = o.decode(_encoding)
                return _orig_encoder(o)

        self.key_memo = {}
        self.int_as_string_bitcount = (53 if self.bigint_as_string else self.int_as_string_bitcount)
def __init__ ( self , skipkeys = False , ensure_ascii = True , check_circular = False , allow_nan = True , sort_keys = False , indent = None , separators = None , encoding = 'utf-8' , default = None , use_decimal = True , namedtuple_as_object = True , tuple_as_array = True , bigint_as_string = False , item_sort_key = None , for_json = True , ignore_nan = False , int_as_string_bitcount = None ) : self . skipkeys = skipkeys self . ensure_ascii = ensure_ascii self . check_circular = check_circular self . allow_nan = allow_nan self . sort_keys = sort_keys self . use_decimal = use_decimal self . namedtuple_as_object = namedtuple_as_object self . tuple_as_array = tuple_as_array self . bigint_as_string = bigint_as_string self . item_sort_key = item_sort_key self . for_json = for_json self . ignore_nan = ignore_nan self . int_as_string_bitcount = int_as_string_bitcount if indent is not None and not isinstance ( indent , string_types ) : indent = indent * ' ' self . indent = indent if separators is not None : self . item_separator , self . key_separator = separators elif indent is not None : self . item_separator = ',' if default is not None : self . default = default self . encoding = encoding if self . check_circular : self . markers = { } else : self . markers = None if self . ensure_ascii : self . _encoder = encode_basestring_ascii else : self . _encoder = encode_basestring if self . encoding != 'utf-8' : def _encoder ( o , _orig_encoder = self . _encoder , _encoding = self . encoding ) : if isinstance ( o , binary_type ) : o = o . decode ( _encoding ) return _orig_encoder ( o ) self . key_memo = { } self . int_as_string_bitcount = ( 53 if self . bigint_as_string else self . int_as_string_bitcount )