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[ | ||
{ | ||
"caption": "GameMaker: New Script", | ||
"command": "game_maker_new_script" | ||
} | ||
] |
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Learn more about bidirectional Unicode characters
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r"""JSON (JavaScript Object Notation) <http://json.org> is a subset of | ||
JavaScript syntax (ECMA-262 3rd edition) used as a lightweight data | ||
interchange format. | ||
:mod:`json` exposes an API familiar to users of the standard library | ||
:mod:`marshal` and :mod:`pickle` modules. It is derived from a | ||
version of the externally maintained simplejson library. | ||
Encoding basic Python object hierarchies:: | ||
>>> import json | ||
>>> json.dumps(['foo', {'bar': ('baz', None, 1.0, 2)}]) | ||
'["foo", {"bar": ["baz", null, 1.0, 2]}]' | ||
>>> print(json.dumps("\"foo\bar")) | ||
"\"foo\bar" | ||
>>> print(json.dumps('\u1234')) | ||
"\u1234" | ||
>>> print(json.dumps('\\')) | ||
"\\" | ||
>>> print(json.dumps({"c": 0, "b": 0, "a": 0}, sort_keys=True)) | ||
{"a": 0, "b": 0, "c": 0} | ||
>>> from io import StringIO | ||
>>> io = StringIO() | ||
>>> json.dump(['streaming API'], io) | ||
>>> io.getvalue() | ||
'["streaming API"]' | ||
Compact encoding:: | ||
>>> import json | ||
>>> from collections import OrderedDict | ||
>>> mydict = OrderedDict([('4', 5), ('6', 7)]) | ||
>>> json.dumps([1,2,3,mydict], separators=(',', ':')) | ||
'[1,2,3,{"4":5,"6":7}]' | ||
Pretty printing:: | ||
>>> import json | ||
>>> print(json.dumps({'4': 5, '6': 7}, sort_keys=True, indent=4)) | ||
{ | ||
"4": 5, | ||
"6": 7 | ||
} | ||
Decoding JSON:: | ||
>>> import json | ||
>>> obj = ['foo', {'bar': ['baz', None, 1.0, 2]}] | ||
>>> json.loads('["foo", {"bar":["baz", null, 1.0, 2]}]') == obj | ||
True | ||
>>> json.loads('"\\"foo\\bar"') == '"foo\x08ar' | ||
True | ||
>>> from io import StringIO | ||
>>> io = StringIO('["streaming API"]') | ||
>>> json.load(io)[0] == 'streaming API' | ||
True | ||
Specializing JSON object decoding:: | ||
>>> import json | ||
>>> def as_complex(dct): | ||
... if '__complex__' in dct: | ||
... return complex(dct['real'], dct['imag']) | ||
... return dct | ||
... | ||
>>> json.loads('{"__complex__": true, "real": 1, "imag": 2}', | ||
... object_hook=as_complex) | ||
(1+2j) | ||
>>> from decimal import Decimal | ||
>>> json.loads('1.1', parse_float=Decimal) == Decimal('1.1') | ||
True | ||
Specializing JSON object encoding:: | ||
>>> import json | ||
>>> def encode_complex(obj): | ||
... if isinstance(obj, complex): | ||
... return [obj.real, obj.imag] | ||
... raise TypeError(repr(o) + " is not JSON serializable") | ||
... | ||
>>> json.dumps(2 + 1j, default=encode_complex) | ||
'[2.0, 1.0]' | ||
>>> json.JSONEncoder(default=encode_complex).encode(2 + 1j) | ||
'[2.0, 1.0]' | ||
>>> ''.join(json.JSONEncoder(default=encode_complex).iterencode(2 + 1j)) | ||
'[2.0, 1.0]' | ||
Using json.tool from the shell to validate and pretty-print:: | ||
$ echo '{"json":"obj"}' | python -m json.tool | ||
{ | ||
"json": "obj" | ||
} | ||
$ echo '{ 1.2:3.4}' | python -m json.tool | ||
Expecting property name enclosed in double quotes: line 1 column 3 (char 2) | ||
""" | ||
__version__ = '2.0.9' | ||
__all__ = [ | ||
'dump', 'dumps', 'load', 'loads', | ||
'JSONDecoder', 'JSONDecodeError', 'JSONEncoder', | ||
] | ||
|
||
__author__ = 'Bob Ippolito <bob@redivi.com>' | ||
|
||
from .decoder import JSONDecoder, JSONDecodeError | ||
from .encoder import JSONEncoder | ||
|
||
_default_encoder = JSONEncoder( | ||
skipkeys=False, | ||
ensure_ascii=True, | ||
check_circular=True, | ||
allow_nan=True, | ||
indent=None, | ||
separators=None, | ||
default=None, | ||
) | ||
|
||
def dump(obj, fp, skipkeys=False, ensure_ascii=True, check_circular=True, | ||
allow_nan=True, cls=None, indent=None, separators=None, | ||
default=None, sort_keys=False, **kw): | ||
"""Serialize ``obj`` as a JSON formatted stream to ``fp`` (a | ||
``.write()``-supporting file-like object). | ||
If ``skipkeys`` is true then ``dict`` keys that are not basic types | ||
(``str``, ``int``, ``float``, ``bool``, ``None``) will be skipped | ||
instead of raising a ``TypeError``. | ||
If ``ensure_ascii`` is false, then the strings written to ``fp`` can | ||
contain non-ASCII characters if they appear in strings contained in | ||
``obj``. Otherwise, all such characters are escaped in JSON strings. | ||
If ``check_circular`` is false, then the circular reference check | ||
for container types will be skipped and a circular reference will | ||
result in an ``OverflowError`` (or worse). | ||
If ``allow_nan`` is false, then it will be a ``ValueError`` to | ||
serialize out of range ``float`` values (``nan``, ``inf``, ``-inf``) | ||
in strict compliance of the JSON specification, instead of using the | ||
JavaScript equivalents (``NaN``, ``Infinity``, ``-Infinity``). | ||
If ``indent`` is a non-negative integer, then JSON array elements and | ||
object members will be pretty-printed with that indent level. An indent | ||
level of 0 will only insert newlines. ``None`` is the most compact | ||
representation. | ||
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. | ||
``default(obj)`` is a function that should return a serializable version | ||
of obj or raise TypeError. The default simply raises TypeError. | ||
If *sort_keys* is ``True`` (default: ``False``), then the output of | ||
dictionaries will be sorted by key. | ||
To use a custom ``JSONEncoder`` subclass (e.g. one that overrides the | ||
``.default()`` method to serialize additional types), specify it with | ||
the ``cls`` kwarg; otherwise ``JSONEncoder`` is used. | ||
""" | ||
# cached encoder | ||
if (not skipkeys and ensure_ascii and | ||
check_circular and allow_nan and | ||
cls is None and indent is None and separators is None and | ||
default is None and not sort_keys and not kw): | ||
iterable = _default_encoder.iterencode(obj) | ||
else: | ||
if cls is None: | ||
cls = JSONEncoder | ||
iterable = cls(skipkeys=skipkeys, ensure_ascii=ensure_ascii, | ||
check_circular=check_circular, allow_nan=allow_nan, indent=indent, | ||
separators=separators, | ||
default=default, sort_keys=sort_keys, **kw).iterencode(obj) | ||
# could accelerate with writelines in some versions of Python, at | ||
# a debuggability cost | ||
for chunk in iterable: | ||
fp.write(chunk) | ||
|
||
|
||
def dumps(obj, skipkeys=False, ensure_ascii=True, check_circular=True, | ||
allow_nan=True, cls=None, indent=None, separators=None, | ||
default=None, sort_keys=False, **kw): | ||
"""Serialize ``obj`` to a JSON formatted ``str``. | ||
If ``skipkeys`` is true then ``dict`` keys that are not basic types | ||
(``str``, ``int``, ``float``, ``bool``, ``None``) will be skipped | ||
instead of raising a ``TypeError``. | ||
If ``ensure_ascii`` is false, then the return value can contain non-ASCII | ||
characters if they appear in strings contained in ``obj``. Otherwise, all | ||
such characters are escaped in JSON strings. | ||
If ``check_circular`` is false, then the circular reference check | ||
for container types will be skipped and a circular reference will | ||
result in an ``OverflowError`` (or worse). | ||
If ``allow_nan`` is false, then it will be a ``ValueError`` to | ||
serialize out of range ``float`` values (``nan``, ``inf``, ``-inf``) in | ||
strict compliance of the JSON specification, instead of using the | ||
JavaScript equivalents (``NaN``, ``Infinity``, ``-Infinity``). | ||
If ``indent`` is a non-negative integer, then JSON array elements and | ||
object members will be pretty-printed with that indent level. An indent | ||
level of 0 will only insert newlines. ``None`` is the most compact | ||
representation. | ||
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. | ||
``default(obj)`` is a function that should return a serializable version | ||
of obj or raise TypeError. The default simply raises TypeError. | ||
If *sort_keys* is ``True`` (default: ``False``), then the output of | ||
dictionaries will be sorted by key. | ||
To use a custom ``JSONEncoder`` subclass (e.g. one that overrides the | ||
``.default()`` method to serialize additional types), specify it with | ||
the ``cls`` kwarg; otherwise ``JSONEncoder`` is used. | ||
""" | ||
# cached encoder | ||
if (not skipkeys and ensure_ascii and | ||
check_circular and allow_nan and | ||
cls is None and indent is None and separators is None and | ||
default is None and not sort_keys and not kw): | ||
return _default_encoder.encode(obj) | ||
if cls is None: | ||
cls = JSONEncoder | ||
return cls( | ||
skipkeys=skipkeys, ensure_ascii=ensure_ascii, | ||
check_circular=check_circular, allow_nan=allow_nan, indent=indent, | ||
separators=separators, default=default, sort_keys=sort_keys, | ||
**kw).encode(obj) | ||
|
||
|
||
_default_decoder = JSONDecoder(object_hook=None, object_pairs_hook=None) | ||
|
||
|
||
def load(fp, cls=None, object_hook=None, parse_float=None, | ||
parse_int=None, parse_constant=None, object_pairs_hook=None, **kw): | ||
"""Deserialize ``fp`` (a ``.read()``-supporting file-like object containing | ||
a JSON document) to a Python object. | ||
``object_hook`` is an optional function that will be called with the | ||
result of any object literal decode (a ``dict``). The return value of | ||
``object_hook`` will be used instead of the ``dict``. This feature | ||
can be used to implement custom decoders (e.g. JSON-RPC class hinting). | ||
``object_pairs_hook`` is an optional function that will be called with the | ||
result of any object literal decoded with an ordered list of pairs. The | ||
return value of ``object_pairs_hook`` will be used instead of the ``dict``. | ||
This feature can be used to implement custom decoders that rely on the | ||
order that the key and value pairs are decoded (for example, | ||
collections.OrderedDict will remember the order of insertion). If | ||
``object_hook`` is also defined, the ``object_pairs_hook`` takes priority. | ||
To use a custom ``JSONDecoder`` subclass, specify it with the ``cls`` | ||
kwarg; otherwise ``JSONDecoder`` is used. | ||
""" | ||
return loads(fp.read(), | ||
cls=cls, object_hook=object_hook, | ||
parse_float=parse_float, parse_int=parse_int, | ||
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw) | ||
|
||
|
||
def loads(s, encoding=None, cls=None, object_hook=None, parse_float=None, | ||
parse_int=None, parse_constant=None, object_pairs_hook=None, **kw): | ||
"""Deserialize ``s`` (a ``str`` instance containing a JSON | ||
document) to a Python object. | ||
``object_hook`` is an optional function that will be called with the | ||
result of any object literal decode (a ``dict``). The return value of | ||
``object_hook`` will be used instead of the ``dict``. This feature | ||
can be used to implement custom decoders (e.g. JSON-RPC class hinting). | ||
``object_pairs_hook`` is an optional function that will be called with the | ||
result of any object literal decoded with an ordered list of pairs. The | ||
return value of ``object_pairs_hook`` will be used instead of the ``dict``. | ||
This feature can be used to implement custom decoders that rely on the | ||
order that the key and value pairs are decoded (for example, | ||
collections.OrderedDict will remember the order of insertion). If | ||
``object_hook`` is also defined, the ``object_pairs_hook`` takes priority. | ||
``parse_float``, if specified, will be called with the string | ||
of every JSON float to be decoded. By default this is equivalent to | ||
float(num_str). This can be used to use another datatype or parser | ||
for JSON floats (e.g. decimal.Decimal). | ||
``parse_int``, if specified, will be called with the string | ||
of every JSON int to be decoded. By default this is equivalent to | ||
int(num_str). This can be used to use another datatype or parser | ||
for JSON integers (e.g. float). | ||
``parse_constant``, if specified, will be called with one of the | ||
following strings: -Infinity, Infinity, NaN, null, true, false. | ||
This can be used to raise an exception if invalid JSON numbers | ||
are encountered. | ||
To use a custom ``JSONDecoder`` subclass, specify it with the ``cls`` | ||
kwarg; otherwise ``JSONDecoder`` is used. | ||
The ``encoding`` argument is ignored and deprecated. | ||
""" | ||
if not isinstance(s, str): | ||
raise TypeError('the JSON object must be str, not {!r}'.format( | ||
s.__class__.__name__)) | ||
if s.startswith(u'\ufeff'): | ||
raise JSONDecodeError("Unexpected UTF-8 BOM (decode using utf-8-sig)", | ||
s, 0) | ||
if (cls is None and object_hook is None and | ||
parse_int is None and parse_float is None and | ||
parse_constant is None and object_pairs_hook is None and not kw): | ||
return _default_decoder.decode(s) | ||
if cls is None: | ||
cls = JSONDecoder | ||
if object_hook is not None: | ||
kw['object_hook'] = object_hook | ||
if object_pairs_hook is not None: | ||
kw['object_pairs_hook'] = object_pairs_hook | ||
if parse_float is not None: | ||
kw['parse_float'] = parse_float | ||
if parse_int is not None: | ||
kw['parse_int'] = parse_int | ||
if parse_constant is not None: | ||
kw['parse_constant'] = parse_constant | ||
return cls(**kw).decode(s) |
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