json parsing with python

Question

I try to parse this little json, i want to take the number :

{"nombre":18747}

I try :

import urllib.request
request = urllib.request.Request("http://myurl.com")
response = urllib.request.urlopen(request)
print (response.read().decode('utf-8')) //print ->  {"nombre":18747}

import json
json = (response.read().decode('utf-8'))
json.loads(json)

But I have:

Traceback (most recent call last):
  File "<pyshell#38>", line 1, in <module>
    json.loads('json')
AttributeError: 'str' object has no attribute 'loads'

Any help?

Martijn Pieters · Accepted Answer · 2015-08-23 17:56:07Z

5

You already read the network data; you cannot read it twice. And you are rebinding json to the network-read data, replacing the module reference. Don't use json for that reference!

Remove the print statement, use data for the string reference and it'll work.

Working code:

import urllib.request
import json

request = urllib.request.Request("http://httpbin.org/get")
response = urllib.request.urlopen(request)
encoding = response.info().get_content_charset('utf8')
data = json.loads(response.read().decode(encoding))

where we also make use of any charset parameter on the response to ensure we use the right codec to decode the response data.

For the http://httpbin.org/get url above, this produces:

{'args': {}, 'headers': {'Host': 'httpbin.org', 'Accept-Encoding': 'identity', 'Connection': 'close', 'User-Agent': 'Python-urllib/3.3'}, 'origin': '12.34.56.78', 'url': 'http://httpbin.org/get'}

edited Aug 23, 2015 at 17:56

answered Dec 11, 2013 at 17:11

Martijn Pieters

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4 Comments

mpgn Over a year ago

Yep but i have this : File "C:\Python33\lib\json\decoder.py", line 352, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) TypeError: can't use a string pattern on a bytes-like object

mpgn Over a year ago

Yep, now i have : ValueError: No JSON object could be decoded

Martijn Pieters Over a year ago

@Martialp: Does the exact code I posted in my answer work for you? Try that first. Then move on from there.

mpgn Over a year ago

With the adresse in your code it's works, not with my adresse, so your solution is ok, the probleme is on my side :)

Saša Šijak · Accepted Answer · 2013-12-11 17:11:59Z

1

name your string differently, for example instead :

json = (response.read().decode('utf-8'))
json.loads(json)

write :

input = (response.read().decode('utf-8'))
json.loads(input)

With the way it is currently in your question, you are overriding imported json module with that variable name which is string. Also remove the print statement.

answered Dec 11, 2013 at 17:11

Saša Šijak

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