I am using Python 3 and trying to connect to dstk. I am getting an error with urllib package.
I researched a lot on SO and could not find anything similar to this problem.
api_url = self.api_base+'/street2coordinates'
api_body = json.dumps(addresses)
#api_url=api_url.encode("utf-8")
#api_body=api_body.encode("utf-8")
print(type(api_url))
response_string = six.moves.urllib.request.urlopen(api_url, api_body).read()
response = json.loads(response_string)
If I do not encode the api_url and api_body I get the below:
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 1247, in do_request_
raise TypeError(msg)
TypeError: POST data should be bytes, an iterable of bytes, or a file object. It cannot be of type str.
However if I try and encode them to utf-8 (uncommenting the lines) then I get the below error:
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 514, in open
req.data = data
AttributeError: 'bytes' object has no attribute 'data'
This seems like a circular error for me and I am not able to resolve it. I did try make to solutions from SO regards to change it to json.load etc but nothing seems to work.
You are encoding both the url and the request body, but only the body should be encoded.
This ought to work:
api_url = self.api_base+'/street2coordinates'
api_body = json.dumps(addresses)
api_body=api_body.encode("utf-8")
response_string = six.moves.urllib.request.urlopen(api_url, api_body).read()
response = json.loads(response_string)
urlopen's arguments are passed to another class to create an opener, and this class does not know whether it has been passed a url or a Request instance. So it checks whether the "url" is a string - if the "url" is a string, it creates a Request, if not it assumes that "url" is a Request instance and tries to set its data attribute, causing the exception that you are seeing.
The code in question is here.