如何将“类JSON”字符串转换为真正的JSON数据

Question

I now have a string called str1 like this:

{u'price': 542.23, u'name': u'ACME', u'shares': 100}

and I want to transform it into a real JSON data.

the way that uses

data = json.loads(str1)

doesn't work. Do you have any good ideas? (with Python)

Answer 1

import ast

s = "{u'price': 542.23, u'name': u'ACME', u'shares': 100}"
d = ast.literal_eval(s)

> type(d)
<type 'dict'>

> d['price']
542.23

By the way, eval is not safe.

ast.literal_eval raises an exception if the input isn't a valid Python datatype, so the code won't be executed if it's not.

Use ast.literal_eval whenever you need eval. If you have Python expressions as an input that you want to evaluate, you shouldn't (have them).