title: “ python进行json操作\t\t”
tags:

  • json
  • python
    url: 1055.html
    id: 1055
    categories:
  • python
    date: 2018-04-02 11:14:02

介绍

python有json模块，直接import json即可使用。主要有四个方法: dumps将python类型转换为json字符串 loads将json字符串转换成python类型 dump将存有python类型的文件直接转为json字符串 load将存有json格式的文件转为python类型 -s方法是直接进行数据类型转换，而-方法则是包含了文件操作，可以通过import json;help(json.XXX)获得相关帮助，部分帮助内容如下：

帮助文档

  1. 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).
  2. 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.
  3. 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.
  4. 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, bytes or bytearray instance containing a JSON document) to a Python object.

python-json类型对应关系

python类型→json类型 dict→object list, tuple→array str, unicode→string int, long, float→number True,False→true,false None→null