1. 从python原始类型向json类型的转换过程，具体的转换如下：
import json
json.dump(obj, fp, skipkeys=False,ensure_ascii=True, check_circular=True, allow_nan=True, cls=None, indent=None, separators=None, encoding="utf-8", default=None, sort_keys=False, **kw)
json.dumps(obj, skipkeys=False, ensure_ascii=True, check_circular=True, allow_nan=True, cls=None, indent=None, separators=None, encoding="utf-8",default=None, sort_keys=False, **kw)
python json
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dict object
list,tuple array
str,unicode string
int,long,float number
True true
False false
None null
>>> import json
>>> json.dumps(['foo', {'bar': ('baz', None, 1.0, 2)}])
'["foo", {"bar": ["baz", null, 1.0, 2]}]' >>> f = open('demo.txt','w')
>>> json.dump(range(100), f) # 打开 demo.txt 可以看到
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99]
2. 从 json 类型向 python 的转换过程，具体的转换如下：
import json
json.load(fp[, encoding[, cls[, object_hook[, parse_float[, parse_int[, parse_constant[, object_pairs_hook[, **kw]]]]]]]]) json.loads(s[, encoding[, cls[, object_hook[, parse_float[, parse_int[, parse_constant[, object_pairs_hook[, **kw]]]]]]]])
json python
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object dict
array list
string str
number(int) int
number(real) float
true True
false False
null None
>>> import json
>>> json.loads('{"a": 1, "b": 2, "c": 3}') # string to python objects
{u'a': 1, u'c': 3, u'b': 2} # 1.txt 中的内容
[{"a": [1, 2, 3, 4, 5]}, {"b": [1, 2, 3]}, {"c": ["English", "Chinese"]}] >>> f = open('1.txt')
>>> json.load(f)
[{u'a': [1, 2, 3, 4, 5]}, {u'b': [1, 2, 3]}, {u'c': [u'English', u'Chinese']}]