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關(guān)于Python dict存中文字符dumps()的問(wèn)題

 更新時(shí)間:2021年10月28日 17:16:12   作者:Loganer  
這篇文章主要介紹了關(guān)于Python dict存中文字符dumps()的問(wèn)題,本文給大家分享問(wèn)題及解決方案,給大家介紹的非常詳細(xì),對(duì)大家的學(xué)習(xí)或工作具有一定的參考借鑒價(jià)值,需要的朋友可以參考下

Background

之前數(shù)據(jù)庫(kù)只區(qū)分了Android,IOS兩個(gè)平臺(tái),游戲上線后現(xiàn)在PM想要區(qū)分國(guó)服,海外服,港臺(tái)服。這幾個(gè)字段從前端那里的接口獲得,code過(guò)程中發(fā)現(xiàn)無(wú)論如何把中文的value丟到dict中存到數(shù)據(jù)庫(kù)中就變成類似這樣**"\u56fd\u670d"**

Solution

1.首先懷疑數(shù)據(jù)庫(kù)編碼問(wèn)題,但看了一下數(shù)據(jù)庫(kù)其他字段有中文格式的,所以要先check數(shù)據(jù)庫(kù)(MySQL)的字符編碼。

在這里插入圖片描述

可以看到明明就TMD是utf-8啊,所以一定不是數(shù)據(jù)庫(kù)層出現(xiàn)的問(wèn)題,回到代碼debug

2.Google一下
這個(gè)問(wèn)題好多都是Python2的解決方案,找到了一個(gè)感覺(jué)靠譜點(diǎn)的

dict1 = {'name':'張三'}
print(json.dumps(dict1,encoding='utf-8',ensure_ascii=False))

博客中的解法,但是我的Python版本是3.9,就會(huì)報(bào)Error如下

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/local/python3/lib/python3.9/threading.py", line 950, in _bootstrap_inner
    self.run()
  File "/usr/local/python3/lib/python3.9/threading.py", line 888, in run
    self._target(*self._args, **self._kwargs)
  File "/home/dapan_ext/project_table.py", line 91, in http_request
    self.get_data(project_response_data)
  File "/home/dapan_ext/project_table.py", line 115, in get_data
    json.dumps(dict_1, encoding='utf-8', ensure_ascii=False)
  File "/usr/local/python3/lib/python3.9/json/__init__.py", line 234, in dumps
    return cls(
TypeError: __init__() got an unexpected keyword argument 'encoding'

意思就是:在__init__json這個(gè)東東的時(shí)候它不認(rèn)識(shí)'encoding'這個(gè)argument。

那就翻閱源碼康康->->:

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)

注意到這里:

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.

意思就是:
ensure_ascii置為false時(shí),返回值就可以返回非ASCII編碼的字符,這豈不正是我們需要的,Got it!

回去改代碼:

server_name = str(related['name'])
# print(server_name)
dict_1 = {'appKey': related['appKey'], 'client': related['client'], 'name': server_name}
crasheye.append(dict_1)
crasheyes = json.dumps(crasheye, ensure_ascii=False)

完美解決問(wèn)題(●ˇ∀ˇ●)

在這里插入圖片描述

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