How to use the simplejson.encoder function in simplejson

_MULTIPLE_PLOT_HEIGHT_PER_PLOT = 4

_MULTIPLE_PLOT_MARKER_TYPE = 'o'
_MULTIPLE_PLOT_MARKER_SIZE = 4
_SINGLE_PLOT_STYLE = 'bs-'  # blue squares with lines connecting
_SINGLE_PLOT_ERROR_BAR_COLOR = 'r'

_LEGEND_FONT_SIZE = 'xx-small'
_LEGEND_HANDLE_LENGTH = 0.03
_LEGEND_NUM_POINTS = 3
_LEGEND_MARKER_TYPE = 'o'

_LINE_XTICK_LABELS_SIZE = 'x-small'
_BAR_XTICK_LABELS_SIZE = 8

_json_encoder = encoder.JSONEncoder()


class NoDataError(Exception):

    """
    Exception to raise if the graphing query returned an empty resultset.
    """


def _colors(n):
    """
    Generator function for creating n colors. The return value is a tuple
    representing the RGB of the color.
    """
    for i in xrange(n):
        yield colorsys.hsv_to_rgb(float(i) / n, 1.0, 1.0)

def _toggle_speedups(enabled):
    import simplejson.decoder as dec
    import simplejson.encoder as enc
    import simplejson.scanner as scan
    c_make_encoder = _import_c_make_encoder()
    if enabled:
        dec.scanstring = dec.c_scanstring or dec.py_scanstring
        enc.c_make_encoder = c_make_encoder
        enc.encode_basestring_ascii = (enc.c_encode_basestring_ascii or
            enc.py_encode_basestring_ascii)
        scan.make_scanner = scan.c_make_scanner or scan.py_make_scanner
    else:
        dec.scanstring = dec.py_scanstring
        enc.c_make_encoder = None
        enc.encode_basestring_ascii = enc.py_encode_basestring_ascii
        scan.make_scanner = scan.py_make_scanner
    dec.make_scanner = scan.make_scanner
    global _default_decoder
    _default_decoder = JSONDecoder(
        encoding=None,
        object_hook=None,
        object_pairs_hook=None,
    )
    global _default_encoder
    _default_encoder = JSONEncoder(

def _toggle_speedups(enabled):
    import simplejson.decoder as dec
    import simplejson.encoder as enc
    import simplejson.scanner as scan
    c_make_encoder = _import_c_make_encoder()
    if enabled:
        dec.scanstring = dec.c_scanstring or dec.py_scanstring
        enc.c_make_encoder = c_make_encoder
        enc.encode_basestring_ascii = (enc.c_encode_basestring_ascii or 
            enc.py_encode_basestring_ascii)
        scan.make_scanner = scan.c_make_scanner or scan.py_make_scanner
    else:
        dec.scanstring = dec.py_scanstring
        enc.c_make_encoder = None
        enc.encode_basestring_ascii = enc.py_encode_basestring_ascii
        scan.make_scanner = scan.py_make_scanner
    dec.make_scanner = scan.make_scanner
    global _default_decoder
    _default_decoder = JSONDecoder(
        encoding=None,
        object_hook=None,
        object_pairs_hook=None,
    )
    global _default_encoder

def _toggle_speedups(enabled):
    import simplejson.decoder as dec
    import simplejson.encoder as enc
    import simplejson.scanner as scan
    c_make_encoder = _import_c_make_encoder()
    if enabled:
        dec.scanstring = dec.c_scanstring or dec.py_scanstring
        enc.c_make_encoder = c_make_encoder
        enc.encode_basestring_ascii = (enc.c_encode_basestring_ascii or 
            enc.py_encode_basestring_ascii)
        scan.make_scanner = scan.c_make_scanner or scan.py_make_scanner
    else:
        dec.scanstring = dec.py_scanstring
        enc.c_make_encoder = None
        enc.encode_basestring_ascii = enc.py_encode_basestring_ascii
        scan.make_scanner = scan.py_make_scanner
    dec.make_scanner = scan.make_scanner
    global _default_decoder
    _default_decoder = JSONDecoder(
        encoding=None,
        object_hook=None,
        object_pairs_hook=None,
        use_decimal=True,
    )
    global _default_encoder
    _default_encoder = JSONEncoder(
       skipkeys=False,
       ensure_ascii=True,
       check_circular=True,
       allow_nan=True,
       indent=None,

def _toggle_speedups(enabled):
    import simplejson.decoder as dec
    import simplejson.encoder as enc
    import simplejson.scanner as scan
    c_make_encoder = _import_c_make_encoder()
    if enabled:
        dec.scanstring = dec.c_scanstring or dec.py_scanstring
        enc.c_make_encoder = c_make_encoder
        enc.encode_basestring_ascii = (enc.c_encode_basestring_ascii or 
            enc.py_encode_basestring_ascii)
        scan.make_scanner = scan.c_make_scanner or scan.py_make_scanner
    else:
        dec.scanstring = dec.py_scanstring
        enc.c_make_encoder = None
        enc.encode_basestring_ascii = enc.py_encode_basestring_ascii
        scan.make_scanner = scan.py_make_scanner
    dec.make_scanner = scan.make_scanner
    global _default_decoder
    _default_decoder = JSONDecoder(
        encoding=None,
        object_hook=None,
        object_pairs_hook=None,
    )
    global _default_encoder

def _toggle_speedups(enabled):
    import simplejson.decoder as dec
    import simplejson.encoder as enc
    import simplejson.scanner as scan
    c_make_encoder = _import_c_make_encoder()
    if enabled:
        dec.scanstring = dec.c_scanstring or dec.py_scanstring
        enc.c_make_encoder = c_make_encoder
        enc.encode_basestring_ascii = (enc.c_encode_basestring_ascii or 
            enc.py_encode_basestring_ascii)
        scan.make_scanner = scan.c_make_scanner or scan.py_make_scanner
    else:
        dec.scanstring = dec.py_scanstring
        enc.c_make_encoder = None
        enc.encode_basestring_ascii = enc.py_encode_basestring_ascii
        scan.make_scanner = scan.py_make_scanner
    dec.make_scanner = scan.make_scanner
    global _default_decoder
    _default_decoder = JSONDecoder(
        encoding=None,
        object_hook=None,
        object_pairs_hook=None,
    )
    global _default_encoder

def _toggle_speedups(enabled):
    from . import decoder as dec
    from . import encoder as enc
    from . import scanner as scan
    c_make_encoder = _import_c_make_encoder()
    if enabled:
        dec.scanstring = dec.c_scanstring or dec.py_scanstring
        enc.c_make_encoder = c_make_encoder
        enc.encode_basestring_ascii = (enc.c_encode_basestring_ascii or
            enc.py_encode_basestring_ascii)
        scan.make_scanner = scan.c_make_scanner or scan.py_make_scanner
    else:
        dec.scanstring = dec.py_scanstring
        enc.c_make_encoder = None
        enc.encode_basestring_ascii = enc.py_encode_basestring_ascii
        scan.make_scanner = scan.py_make_scanner
    dec.make_scanner = scan.make_scanner
    global _default_decoder
    _default_decoder = JSONDecoder(
        encoding=None,
        object_hook=None,
        object_pairs_hook=None,
    )
    global _default_encoder
    _default_encoder = JSONEncoder(
       skipkeys=False,
       ensure_ascii=True,
       check_circular=True,
       allow_nan=True,
       indent=None,

def end_serialization(self):
        precision = self.options.get('precision')
        floatrepr = encoder.FLOAT_REPR
        if precision is not None:
            # Monkey patch for float precision!
            encoder.FLOAT_REPR = lambda o: format(o, '.%sf' % precision)

        self.collection = geojson.FeatureCollection(features=self.objects)
        return geojson.dump(self.collection, self.stream)
        
        encoder.FLOAT_REPR = floatrepr

def _toggle_speedups(enabled):
    import simplejson.decoder as dec
    import simplejson.encoder as enc
    import simplejson.scanner as scan
    c_make_encoder = _import_c_make_encoder()
    if enabled:
        dec.scanstring = dec.c_scanstring or dec.py_scanstring
        enc.c_make_encoder = c_make_encoder
        enc.encode_basestring_ascii = (enc.c_encode_basestring_ascii or 
            enc.py_encode_basestring_ascii)
        scan.make_scanner = scan.c_make_scanner or scan.py_make_scanner
    else:
        dec.scanstring = dec.py_scanstring
        enc.c_make_encoder = None
        enc.encode_basestring_ascii = enc.py_encode_basestring_ascii
        scan.make_scanner = scan.py_make_scanner
    dec.make_scanner = scan.make_scanner
    global _default_decoder
    _default_decoder = JSONDecoder(
        encoding=None,
        object_hook=None,
        object_pairs_hook=None,
    )
    global _default_encoder
    _default_encoder = JSONEncoder(

for i, f in enumerate(source_files):
        LOG.info("Processing:%03i:%s", i + 1, f)
        try:
            with open(f, 'r') as source:
                j = json_load(source)
                if isinstance(j, dict):
                    merged = merge_dictionaries(j, merged)
                else:
                    merged = j
        except IOError as e:
            LOG.error("Failed processing: %s", f)
            LOG.error('  >> %s', e)
    try:
        with open(output_filename, 'w') as target:
            LOG.info("Writing:%s", output_filename)
            json_encoder.FLOAT_REPR = float_to_string
            json_dump(merged, target, sort_keys=True, separators=(',', ':'))
    except IOError as e:
        LOG.error('Failed processing: %s', output_filename)
        LOG.error('  >> %s', e)
    else:
        if output_metrics:
            log_metrics(merged)