How to use the itsdangerous.simplejson.dumps function in itsdangerous

def dumps(obj, **kwargs):
    """Serialize ``obj`` to a JSON formatted ``str`` by using the application's
    configured encoder (:attr:`~flask.Flask.json_encoder`) if there is an
    application on the stack.

    This function can return ``unicode`` strings or ascii-only bytestrings by
    default which coerce into unicode strings automatically.  That behavior by
    default is controlled by the ``JSON_AS_ASCII`` configuration variable
    and can be overridden by the simplejson ``ensure_ascii`` parameter.
    """
    _dump_arg_defaults(kwargs)
    encoding = kwargs.pop('encoding', None)
    rv = _json.dumps(obj, **kwargs)
    if encoding is not None and isinstance(rv, text_type):
        rv = rv.encode(encoding)
    return rv

from ._compat import text_type, PY2

from werkzeug.http import http_date
from jinja2 import Markup

# Use the same json implementation as itsdangerous on which we
# depend anyways.
try:
    from itsdangerous import simplejson as _json
except ImportError:
    from itsdangerous import json as _json


# Figure out if simplejson escapes slashes.  This behavior was changed
# from one version to another without reason.
_slash_escape = '\\/' not in _json.dumps('/')


__all__ = ['dump', 'dumps', 'load', 'loads', 'htmlsafe_dump',
           'htmlsafe_dumps', 'JSONDecoder', 'JSONEncoder',
           'jsonify']


def _wrap_reader_for_text(fp, encoding):
    if isinstance(fp.read(0), bytes):
        fp = io.TextIOWrapper(io.BufferedReader(fp), encoding)
    return fp


def _wrap_writer_for_text(fp, encoding):
    try:
        fp.write('')

def dumps(obj, **kwargs):
    """Serialize ``obj`` to a JSON formatted ``str`` by using the application's
    configured encoder (:attr:`~flask.Flask.json_encoder`) if there is an
    application on the stack.

    This function can return ``unicode`` strings or ascii-only bytestrings by
    default which coerce into unicode strings automatically.  That behavior by
    default is controlled by the ``JSON_AS_ASCII`` configuration variable
    and can be overridden by the simplejson ``ensure_ascii`` parameter.
    """
    _dump_arg_defaults(kwargs)
    encoding = kwargs.pop('encoding', None)
    rv = _json.dumps(obj, **kwargs)
    if encoding is not None and isinstance(rv, text_type):
        rv = rv.encode(encoding)
    return rv

from ._compat import text_type, PY2

from werkzeug.http import http_date
from jinja2 import Markup

# Use the same json implementation as itsdangerous on which we
# depend anyways.
try:
    from itsdangerous import simplejson as _json
except ImportError:
    from itsdangerous import json as _json


# Figure out if simplejson escapes slashes.  This behavior was changed
# from one version to another without reason.
_slash_escape = '\\/' not in _json.dumps('/')


__all__ = ['dump', 'dumps', 'load', 'loads', 'htmlsafe_dump',
           'htmlsafe_dumps', 'JSONDecoder', 'JSONEncoder',
           'jsonify']


def _wrap_reader_for_text(fp, encoding):
    if isinstance(fp.read(0), bytes):
        fp = io.TextIOWrapper(io.BufferedReader(fp), encoding)
    return fp


def _wrap_writer_for_text(fp, encoding):
    try:
        fp.write('')