python's json parsing function does not support single quoted strings-Python Tutorial-php.cn

python's json parsing function does not support single quoted strings

巴扎黑

Release： 2016-12-07 09:38:16

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Using the json parsing function json.loads of the python standard library cannot use single quotes to quote the json string. The example is as follows:

Use double quotes instead, or call json.dumps(a) before loads.

>>> a = "{&#39;aa&#39;:&#39;dd&#39;,&#39;dd&#39;:&#39;df&#39;}"
>>> import json
>>> b = json.loads(a)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib64/python2.6/json/__init__.py", line 307, in loads
    return _default_decoder.decode(s)
  File "/usr/lib64/python2.6/json/decoder.py", line 319, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib64/python2.6/json/decoder.py", line 336, in raw_decode
    obj, end = self._scanner.iterscan(s, **kw).next()
  File "/usr/lib64/python2.6/json/scanner.py", line 55, in iterscan
    rval, next_pos = action(m, context)
  File "/usr/lib64/python2.6/json/decoder.py", line 171, in JSONObject
    raise ValueError(errmsg("Expecting property name", s, end))
ValueError: Expecting property name: line 1 column 1 (char 1)
>>> a = &#39;{"aa":"asdf","dd":"dfads"}
  File "<stdin>", line 1
    a = &#39;{"aa":"asdf","dd":"dfads"}
                                  ^
SyntaxError: EOL while scanning string literal
>>> a = &#39;{"aa":"asdf","dd":"dfads"}&#39;
>>> b = json.loads(a)
>>> b
>>> <span style="font-family: Helvetica, Tahoma, Arial, sans-serif; line-height: 1.5; background-color: white;">{u&#39;aa&#39;: u&#39;asdf&#39;, u&#39;dd&#39;: u&#39;dfads&#39;}</span><span style="font-family: Helvetica, Tahoma, Arial, sans-serif; line-height: 1.5; background-color: white;">
</span>

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