CODEWITHSUNDEEP
pythonjson
Ali
Ali

Reputation: 1383

TypeError: decode() argument 1 must be str, not None

I'm create new project

I create two function. First func normally run, but second function not working

First func:

#it's work

def twitter(adress):
    reqURL = request.urlopen("https://cdn.api.twitter.com/1/urls/count.json?url=%s" % adress)
    encodingData = reqURL.headers.get_content_charset()
    jsonLoad = json.loads(reqURL.read().decode(encodingData))
    print("Sharing:", jsonLoad['count'])

Second func:

#Doesn't work

def facebook(adress):
    reqURL = request.urlopen("https://api.facebook.com/method/links.getStats?urls=%s&format=json" % adress)
    encodingData = reqURL.headers.get_content_charset()
    jsonLoad = json.loads(reqURL.read().decode(encodingData))
    print("Sharing:", jsonLoad['share_count'])

How to fix second func(facebook)

I get the error for facebook func:

Traceback (most recent call last):
  File "/myproject/main.py", line 24, in <module>
    facebook(url)
  File "/myproject/main.py", line 15, in facebook
    jsonLoad = json.loads(reqURL.read().decode(encodingData))
TypeError: decode() argument 1 must be str, not None

twitter func out:

Sharing: 951

How can I solve this problem?

Thanks

Upvotes: 1

Views: 10007

Answers (1)

Martijn Pieters
Martijn Pieters

Reputation: 1122172

The Facebook response doesn't include a charset parameter indicating the encoding used:

>>> from urllib import request
>>> adress = 'www.zopatista.com'
>>> reqURL = request.urlopen("https://cdn.api.twitter.com/1/urls/count.json?url=%s" % adress)
>>> reqURL.info().get('content-type')
'application/json;charset=utf-8'
>>> reqURL = request.urlopen("https://api.facebook.com/method/links.getStats?urls=%s&format=json" % adress)
>>> reqURL.info().get('content-type')
'application/json'

Note the charset=utf-8 part in the Twitter response.

The JSON standard states that the default characterset is UTF-8, so pass that to the get_content_charset() method:

encodingData = reqURL.headers.get_content_charset('utf8')
jsonLoad = json.loads(reqURL.read().decode(encodingData))

Now, when no content charset parameter is set, the default 'utf8' is returned instead.

Note that Facebook's JSON response contains a list of matches; because you are passing in just one URL, you could take just the first result:

print("Sharing:", jsonLoad[0]['share_count'])

Upvotes: 1

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