Develop Reference

insert variable into data request dictionary python

I am trying to build a simple record player with the spotify API and I would like to save the playlist id's in variables so it is easier to change or add in the future
import json
import requests
spotify_user_id = "...."
sgt_peppers_id = "6QaVfG1pHYl1z15ZxkvVDW"
class GetSongs:
def __init__(self):
self.user_id=spotify_user_id
self.spotify_token = ""
self.sgt_peppers_id = sgt_peppers_id
def find_songs(self):
query = "https://api.spotify.com/v1/me/player/play?
device_id=......"
headers={"Content.Type": "application/json", "Authorization": "Bearer
{}".format(self.spotify_token)}
data= '{"context_uri":"spotify:album:6QaVfG1pHYl1z15ZxkvVDW"}'
response = requests.put(query, headers=headers, data=data)
I would like to be able to have it like this:
data= '{"context_uri":f"spotify:album:{sgt_peppers_id}"}'
but sadly it doesnt work and all the other methods for inserting variables into strings dont work either. Hope somebody has the anser to this. thank you in advance!

The Spotify API is expecting the request body to be json, which you're currently building by hand. But, it looks like you're using a misspelled header: Content.Type instead of Content-Type (dot instead of dash).
Luckily, the python requests library can encode python objects into json for you and add the Content-Type headers automatically. It can also add the parameters to the url for you, so you don't have to create the ?query=string manually.
# We can add this to the string as a variable in the `json={...}` arg below
album_uri = "6QaVfG1pHYl1z15ZxkvVDW"
response = requests.put(
"https://api.spotify.com/v1/me/player/play", # url without the `?`
params={"device_id": "..."}, # the params -- ?device_id=...
headers={"Authorization": f"Bearer {self.spotify_token}"},
json={"context_uri": f"spotify:album:{album_uri}"},
)
Let the requests library do the work for you!

Mapbox API PUT Datasets Feature return "Provide a single Feature to insert"

I am trying to add a feature to the Dataset via Mapbox API using Python. I'm following this instruction https://docs.mapbox.com/api/maps/#update-a-dataset but keep getting this error:
{'message': 'Provide a single Feature to insert'}
The code looks like this:
rs = []
dictionary = {
"id":1,
"type":"Feature",
"properties":{},
"geometry":{"coordinates":[-83.750246, 42.269375],"type":"Point"}}
url = "https://api.mapbox.com/datasets/v1/voratima/"+dataset+"/features/1?access_token="+access_token
rs.append(grequests.put(url, data=dictionary, hooks = {'response' : do_something}))
grequests.map(rs, exception_handler=exception_handler)
I've tried the following but none of them work:
using requests instead of grequests
wrapping the dictionary with json.dumps()
changing the put parameter from data=dictionary to json=dictionary
Making sure the id for both data and URL are set to 1.
Postman of the exact same request does not have the error. What am I missing?

Given a dataset with dataset ID dataset exists, your request body looks ok.
Please add the header
headers = {'Content-type': 'application/json'}
Also can you check if you meet these specs:
This should be one individual GeoJSON feature, not a GeoJSON
FeatureCollection. If the GeoJSON feature has a top-level id property,
it must match the feature_id you use in the URL endpoint.

It turns out I forgot the header. Thanks to Mortiz for pointing that out. After the update I got
<Response [400]> {'message': 'Unexpected token i'}
That's because I need to wrap the dictionary inside json.dumps(). Then the error became
<Response [422]> {'message': 'Request URI does not match feature id'}
That's because the id in the dictionary has to be a string i.e. "id":"1" not "id":1. Here's the code that works:
rs = []
dictionary = {
"id":"1",
"type":"Feature",
"properties":{},
"geometry":{"coordinates":[-83.750246, 42.269375],"type":"Point"}}
headers = {'Content-type': 'application/json'}
url = "https://api.mapbox.com/datasets/v1/voratima/"+dataset+"/features/1?access_token="+access_token
rs.append(grequests.put(url, data=json.dumps(dictionary), headers=headers, hooks = {'response' : do_something}))
grequests.map(rs, exception_handler=exception_handler)

requests.post with Python

I'm connecting to a login protected API with a Python script here below.
import requests
url = 'https://api.json'
header = {'Content-Type': 'application/x-www-form-urlencoded'}
login = ('kjji#snm.com', 'xxxxx')
mnem = 'inputRequests':'{'inputRequests':'[{'function':'GDSP','identifier':'ibm','mnemonic':'IQ_TOTAL_REV'}]}}
r = requests.post(url, auth=login, data=mnem, headers=header)
print(r.json())
The connection is established but I am getting an error from the API because of the format of the data request.The original format is here below. I cannot find a way to enter this in the mnem here above:
inputRequests={inputRequests:
[
{function:"xxx",identifier:"xxx",mnemonic:"xxx"},
]
}
The error given is
C:\Users\xxx\Desktop>pie.py
File "C:\Users\xxx\Desktop\pie.py", line 6
mnem={'inputRequests':'{'inputRequests':'[{'function':'xxx','identifier':'xx','mnemonic':'xxx'}]}}
^
SyntaxError: invalid syntax
I am unsure on how to proceed from here. I cannot find anything in the requests documentation that points to how to insert several variables in the data field.

The requests module in Python receive protogenic Python dict as the JSON data in post request but not a string. Therefore, you may try to define mnem like this:
mnem = {
'inputRequests':[
{'function':'GDSP',
'identifier':'ibm',
'mnemonic':'IQ_TOTAL_REV'
}
]}

the data parameter should be a dictionary.
therefore to pass the three parameters try using:
mnem = {'function':'GDSP','identifier':'ibm','mnemonic':'IQ_TOTAL_REV'}

How to wait in line with Udacity reviewer API in Python?

I'm trying to use the Udacity reviewer API to wait in line to be assigned projects. However, I'm not able to figure out how to use the /submission_requests POST call. Right now I'm doing this in Python:
import requests
TOKEN = os.getenv('udacity_api_key')
BASE_URL = 'https://review-api.udacity.com/api/v1/'
headers = {'Authorization': TOKEN}
req_url = BASE_URL + 'submission_requests'
proj_req_data = {
"projects": [
{
"project_id": 232,
"language": "en-us"
}
]
}
res = requests.post(req_url, headers=headers, data=proj_req_data)
and the response (print res.content) is:
{"error":"request must have at least one valid project/language pair"}
I've also tried 'en' as the language. I got the project_id from the /me/certifications GET method.

Turns out I was using the wrong argument for the requests.post() function. If the data is passed as a dict, it needs to be in the json arg. If it is in the data arg, it needs to be stringified with json.dumps().
There's a nice Python API code example here: https://github.com/udacity/grading-assigner

Using python 'requests' to send JSON boolean

I've got a really simple question, but I can't figure it out how to do it. The problem I have is that I want to send the following payload using Python and Requests:
{ 'on': true }
Doing it like this:
payload = { 'on':true }
r = requests.put("http://192.168.2.196/api/newdeveloper/lights/1/state", data = payload)
Doesn't work, because I get the following error:
NameError: name 'true' is not defined
Sending the true as 'true' is not accepted by my server, so that's not an option. Anyone a suggestion? Thanks!

You need to json encode it to get it to a string.
import json
payload = json.dumps({"on":True})

should be {'on': True}, capital T

Starting from requests 2.4.2, instead of passing in the payload with the data parameter, you can use the json parameter like this:
payload = {'on': True}
requests.put(url, json=payload)
And the request will be formatted correctly as a json payload (i.e. {'on': true}).

to make it be lower case like that (if that's what your endpoint requires) do in quotes {'on':'true'}