I want to get elevation data from Google Earth according to latitude and longitude, but I am not able to do this. I'm not sure what I'm doing wrong but my code is shown below.
def getElevation(locations,sensor="true", **elvtn_args):
elvtn_args.update({
'locations': locations,
'sensor': sensor
})
url = ELEVATION_BASE_URL
params = urllib.parse.urlencode(elvtn_args)
baseurl = url +"?"+ params;
req = urllib.request.urlopen(str(baseurl));
response = simplejson.load(req);
And the error I get is :
Traceback (most recent call last):
File "D:\GIS\Arctools\ElevationChart - Copy.py", line 85, in <module>
getElevation(pathStr)
File "D:\GIS\Arctools\ElevationChart - Copy.py", line 45, in getElevation
response = simplejson.load(req);
File "C:\Python32\lib\json\__init__.py", line 262, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
File "C:\Python32\lib\json\__init__.py", line 307, in loads
return _default_decoder.decode(s)
File "C:\Python32\lib\json\decoder.py", line 351, 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
Any help appreciated.
Post is a little late but recently ran into the same problem. The solution below worked for me. Basically what Lennart said.
from urllib import request
import json
req = request.urlopen('https://someurl.net/api')
encoding = req.headers.get_content_charset()
obj = json.loads(req.read().decode(encoding))
In Python 3, binary data, such as the raw response of a http request, is stored in bytes objects. json/simplejson expects strings. The solution is to decode the bytes data to string data with the appropriate encoding, which you can find in the header.
You find the encoding with:
encoding = req.headers.get_content_charset()
You then make the content a string by:
body = req.readall().decode(encoding)
This body you then can pass to the json loader.
(Also, please stop calling the response "req". It's confusing, and makes it sounds like it is a request, which it isn't.)
Related
I hope you're doing good.
I'm trying to get the solar radiation values from this website 'solcast.com.au' .. I have went to their API documentation and followed it here ' https://docs.solcast.com.au/#forecasts-by-location' and I have applied the code:
import requests
url = 'https://api.solcast.com.au/world_radiation/forecasts?latitude= -33.865143&longitude=151.209900&api_key=MYAPI'
res = requests.get(url)
data = res.json()
forecast = data["forecasts"]["ghi"]
print('forecastss: {} dgree'.format(forecast))
So when I run the code I'm getting this error:
Traceback (most recent call last):
File "/home/pi/Desktop/solcastoo.py", line 5, in <module>
data = res.json()
File "/usr/lib/python3/dist-packages/requests/models.py", line 897, in json
return complexjson.loads(self.text, **kwargs)
File "/usr/lib/python3/dist-packages/simplejson/__init__.py", line 518, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3/dist-packages/simplejson/decoder.py", line 370, in decode
obj, end = self.raw_decode(s)
File "/usr/lib/python3/dist-packages/simplejson/decoder.py", line 400, in raw_decode
return self.scan_once(s, idx=_w(s, idx).end())
simplejson.errors.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
Would really appreciate your help.
As John mentioned, you need to specify in your request the format you're willing to receive.
You can do it by adding headers to your request:
import requests
url = 'https://api.solcast.com.au/world_radiation/forecasts?latitude= -33.865143&longitude=151.209900&api_key=API_KEY'
res = requests.get(url, headers={'Content-Type': 'application/json'})
data = res.json()
forecast = data["forecasts"][0]["ghi"]
print('forecastss: {} dgree'.format(forecast))
In their documentation they give you two additional options:
“Accepts” HTTP request header, eg “application/json” for JSON
“format” query string, eg “format=json” for JSON
Endpoint suffix file extension, eg “forecasts.json” for JSON
The second option doesn't work, at least for this specific request. The third option works, but it's a bit odd.
The first option is more commonly used in APIs, but be prepared to use other options too.
PS they say in the documentation that `headers={'Accepts': 'application/json'}
should give the desired result, so I'd assume it also could be a possibility in other endpoints.
Good luck
I want to use python to grab Google Street View image.
For example:
'url=https://maps.googleapis.com/maps/api/streetview?location=48.15763817939112,11.533002555370581&size=512x512&key=
I run the following code:
import requests
result = requests.get(url)
result.json()
But it comes out an error:
Traceback (most recent call last):
File "<ipython-input-69-180c2a4b335d>", line 1, in <module>
result.json()
File "/home/kang/.local/lib/python3.4/site-packages/requests/models.py", line 826, in json
return complexjson.loads(self.text, **kwargs)
File "/home/kang/.local/lib/python3.4/site-packages/simplejson/__init__.py", line 516, in loads
return _default_decoder.decode(s)
File "/home/kang/.local/lib/python3.4/site-packages/simplejson/decoder.py", line 370, in decode
obj, end = self.raw_decode(s)
File "/home/kang/.local/lib/python3.4/site-packages/simplejson/decoder.py", line 400, in raw_decode
return self.scan_once(s, idx=_w(s, idx).end())
JSONDecodeError: Expecting value
The response of this url is:
How to fix that?
Thank you very much.
There a new Street View Image Metadata API that does return JSON.
It will let you query for the availability of Street View panoramas at given locations (by address or latlng). If a panorama is found, the response will include its pano IDs. These queries are free.
Otherwise, the Street View Image API will always return an image. That's why the above JSON metadata API was introduced.
There is no JSON in the response that is coming back to you, which is why it is giving the error.
I am trying to get JSON and print VIA python scirpt. I got response from server 200, not sure why i can not able print the file. Please help me on this!!
The Code used is:
Import Requests
response = requests.get("https://Site1/rest/settings/all-server-status", params={'serverId': '56cd7e4d2d0edcace915e674'}, verify=False)
json_data = json.loads(response.text)
I got below error:
Traceback (most recent call last):
File "<pyshell#51>", line 1, in <module>
json_data = json.loads(response.text)
File "C:\Python27\lib\json\__init__.py", line 338, in loads
return _default_decoder.decode(s)
File "C:\Python27\lib\json\decoder.py", line 366, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Python27\lib\json\decoder.py", line 384, in raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
I tried below statements also but no response:
json_data = json.loads(response)
json_data = json.loads(response.read())
The Json Sample output expecting is:
[{"id":"56cd7e4d2d0edcace915e674","protocol":"https","hostName":"x.x.x.x","port":443,"serverName":"Site1","status":"connected","connected":true}]
Thanks in advance!
The POST request you are making is not returning anything, however the Response 200 indicates the connection was successful(No SSL error etc).
The problem is here: params={'serverId': '56cd7e4d2d0edcace915e674'}.
I would suggest debugging your request.get().
Start by checking if the https://hostname.com/key=value is valid.
I'm trying to get some data from this website. I can enter 'text' and 'longest_only' parameters but when I pass 'ontologies' param, it says No JSON object could be decoded. Here's the complete URL http://data.bioontology.org/annotator?text=lung cancer,bone marrow&ontologies=NCIT&longest_only=true
I'm using Python 2.7
The argument is ontologies[], since you can specify more than one. Your request should be similar to the one that the online search uses:
text=lung+cancer%2Cbone+marrow&ontologies%5B%5D=NCIT&longest_only=true&raw=true
Simply execute the same search there, and use the developer tools option of your favorite browser to check what is the actual payload being sent.
This is not an answer, but the only place I can show the error that I see when executing the sample code. I placed the code in a new module in main and run it in Python 3.4.
import requests
if __name__ == '__main__':
url = 'http://bioportal.bioontology.org/annotator'
params = {
'text': 'lung cancer,bone marrow',
'ontologies': 'NCIT',
'longest_only': 'true'
}
session = requests.Session()
session.get(url)
response = session.post(url, data=params)
data = response.json()
# get the annotations
for annotation in data['annotations']:
print (annotation['annotatedClass']['prefLabel'])
I receive the following error.
Traceback (most recent call last):
File "/Users/.../Sandbox/Ontology.py", line 21, in <module>
data = response.json()
File "/Users/erwin/anaconda/lib/python3.4/site-packages/requests/models.py", line 799, in json
return json.loads(self.text, **kwargs)
File "/Users/erwin/anaconda/lib/python3.4/json/__init__.py", line 318, in loads
return _default_decoder.decode(s)
File "/Users/erwin/anaconda/lib/python3.4/json/decoder.py", line 343, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/Users/erwin/anaconda/lib/python3.4/json/decoder.py", line 361, in raw_decode
raise ValueError(errmsg("Expecting value", s, err.value)) from None
ValueError: Expecting value: line 1 column 1 (char 0)
Here is the sample string i am receiving from one of the web services,
body=%7B%22type%22%3A%22change%22%2C%22url%22%3A%22http%3A%2F%2Fapi.pachube.com%2Fv2%2Ftriggers%2F4100%22%2C%22environment%22%3A%7B%22feed%22%3A%22http%3A%2F%2Fapi.pachube.com%2Fv2%2Ffeeds%2F36133%22%2C%22title%22%3A%22Current+Cost+Bridge%22%2C%22description%22%3Anull%2C%22id%22%3A36133%7D%2C%22threshold_value%22%3Anull%2C%22timestamp%22%3A%222012-01-05T09%3A27%3A01Z%22%2C%22triggering_datastream%22%3A%7B%22url%22%3A%22http%3A%2F%2Fapi.pachube.com%2Fv2%2Ffeeds%2F36133%2Fdatastreams%2F1%22%2C%22value%22%3A%7B%22value%22%3A%22523%22%2C%22max_value%22%3A1269.0%2C%22min_value%22%3A0.0%7D%2C%22id%22%3A%221%22%2C%22units%22%3A%7B%22symbol%22%3A%22W%22%2C%22type%22%3A%22derivedUnits%22%2C%22label%22%3A%22watts%22%7D%7D%2C%22id%22%3A4100%7D
Here is the code,
class Feeds():
def GET(self):
print "Get request is accepted."
return render.index(None)
def POST(self):
print "Post request is accepted."
print (web.data())
Now when that web-service posts the above given data, how will i convert it to readable format? Then, i need to convert it to JSON object and use further. So, how will i convert it?
When i try this code,
json_data = json.loads(web.data())
print json_data['body']
return render.index(json_data['body'])
It gives me an error,
enter code Traceback (most recent call last):
File "/usr/local/lib/python2.6/dist-packages/web/application.py", line 237, in process
return self.handle()
File "/usr/local/lib/python2.6/dist-packages/web/application.py", line 228, in handle
return self._delegate(fn, self.fvars, args)
File "/usr/local/lib/python2.6/dist-packages/web/application.py", line 409, in _delegate
return handle_class(cls)
File "/usr/local/lib/python2.6/dist-packages/web/application.py", line 385, in handle_class
return tocall(*args)
File "/home/ubuntu/pachubeConsumer/src/controllers/feeds.py", line 17, in POST
json_data = json.loads(web.data())
File "/usr/lib/python2.6/json/__init__.py", line 307, in loads
return _default_decoder.decode(s)
File "/usr/lib/python2.6/json/decoder.py", line 319, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python2.6/json/decoder.py", line 338, in raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded here
Where am i going wrong ??
Thanks in advance.
First you need to unquote the body
import urllib
body="%7B%22type%22%3A%22change%22%2C%22url%22%3A%22http%3A%2F%2Fapi.pachube.com%2Fv2%2Ftriggers%2F4100%22%2C%22environment%22%3A%7B%22feed%22%3A%22http%3A%2F%2Fapi.pachube.com%2Fv2%2Ffeeds%2F36133%22%2C%22title%22%3A%22Current+Cost+Bridge%22%2C%22description%22%3Anull%2C%22id%22%3A36133%7D%2C%22threshold_value%22%3Anull%2C%22timestamp%22%3A%222012-01-05T09%3A27%3A01Z%22%2C%22triggering_datastream%22%3A%7B%22url%22%3A%22http%3A%2F%2Fapi.pachube.com%2Fv2%2Ffeeds%2F36133%2Fdatastreams%2F1%22%2C%22value%22%3A%7B%22value%22%3A%22523%22%2C%22max_value%22%3A1269.0%2C%22min_value%22%3A0.0%7D%2C%22id%22%3A%221%22%2C%22units%22%3A%7B%22symbol%22%3A%22W%22%2C%22type%22%3A%22derivedUnits%22%2C%22label%22%3A%22watts%22%7D%7D%2C%22id%22%3A4100%7D"
unquoted = urllib.unquote(body)
Then just load the JSON like normal
import json
pythonDict = json.loads(unquoted)
you need to unescape the query string first using urllib.unquote()
import urllib
unescaped = urllib.unquote(web.data())
then you may use json.loads to convert it into json.
json_data = json.loads(unescaped)
Python 3 urllib unquote move to parse:
from urllib import parse
parse.unquote(web.data())