python字符串转long python字符串转化为字典

1.字符串转字典

#用eval转换

>>> s="{'name':'cxq','sex':'F'}"
>>> print(type(s))
<class 'str'>
>>> s=eval（s)
>>> print(s)
{'name': 'cxq', 'sex': 'F'}
>>> print(type(s))
<class 'dict'>

注：若用eval转换时，字段中有空字符串，就会报错，建议用json.loads转换
#用json.loads 转换

>>> s='{"name":"cxq","sex":"F"}'
>>> s=json.loads(s)
>>> s
{'name': 'cxq', 'sex': 'F'}
>>> print(type(s))
<class 'dict'>

注：此种方式转换时外层用单引号，内层用双引号
``
2.字典转字符串
#用json.dumps()

>>> s={"name":"cxq","sex":"F"}
>>> s=json.dumps(s)
>>> print(s)
{"name": "cxq", "sex": "F"}
>>> print(type(s))
<class 'str'>

#强制转换

>>> s={"name":"cxq","sex":"F"}
>>> s=str(s)
>>> s
"{'name': 'cxq', 'sex': 'F'}"
>>> print(type(s))
<class 'str'>