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Python Requests Passing Array to GET API query

I'm using Amazon's selling partner API to query my inventory. I only want a few SKUs, so I'm trying to send a list using the sellerSkus parameter. Please help me specify the "sellerSkus" parameter correctly.
I'm using python3 and sending the request using:
APIResponse = requests.get(url, params=params, headers=headers, auth=auth)
where url, params, headers and auth are what you'd expect. params has other query parameters, but sellerSkus is the one that's not working. (The url is https://sellingpartnerapi-na.amazon.com/fba/inventory/v1/summaries.)
If I try:
{'sellerSkus': ['SKU1', 'SKU2','SKU3']}
I just get one result back, the last one in the list.
If I try:
{'sellerSkus[]': ['SKU1', 'SKU2','SKU3']}
I get results for all my skus, like it doesn't recognize the parameter.
If I try:
{'sellerSkus': "[SKU1, SKU2,SKU3]"}
I get no results back, like it recognizes the parameter but is treating my list as a single sku that doesn't match.
What am I missing? How do I specify this list so that I get just the skus I need?

How to connect with an API that requires username and password

I am trying to connect to the api as explained in http://api.instatfootball.com/ , It is supposed to be something like the following get /[lang]/data/[action].[format]?login=[login]&pass=[pass]. I know the [lang], [action] and [format] I need to use and I also have a login and password but don´t know how to access to the information inside the API.
If I write the following code:
import requests
r = requests.get('http://api.instatfootball.com/en/data/stat_params_players.json', auth=('login', 'pass'))
r.text
with the actual login and pass, I get the following output:
{"status":"error"}

This API requires authentication as parameters over an insecure connection, so be aware that this is highly lacking on the API part.
import requests
username = 'login'
password = 'password'
base_url = 'http://api.instatfootball.com/en/data/{endpoint}.json'
r = requests.get(base_url.format(endpoint='stat_params_players'), params={'login': username, 'pass': password})
data = r.json()
print(r.status_code)
print(r.text)

You will need to make a http-request using the URL. This will return the requested data in the response body. Depending on the [format] parameter, you will need to decode the data from xml / json to a native Python object.
As rdas already commented, you can use the request library for python (https://requests.readthedocs.io/en/master/). You will also find some code samples there. It will also do proper decoding of JSON data.
If you want to play around with the API a bit, you can use a tool like Postman for testing and debugging your requests. (https://www.postman.com/)

Trying to write Python to request API from 'nlm.nih.gov'

I am trying to run my csv data thru "https://rxnav.nlm.nih.gov/REST/interaction" to identify any drug interactions using python. What else do I need in order to have the program be ready?
I got 200 when print status_code is that mean my code is up and ready?
import requests
response = requests.get("https://rxnav.nlm.nih.gov/REST/interaction")
print(response.status_code)

Here's how you'd hit this API, using requests and the details in their example:
import requests
uri = "https://rxnav.nlm.nih.gov/REST/interaction/interaction.json"
params = {'rxcui': 341248}
r = requests.get(uri, params)
Now you can check that r.status_code is 200, and get at the result of the request. For example:
r.json()
As you may realize, this returns a Python dictionary.
The general idea is that requsts.get() takes the base URL, followed by the query parameters, given as a dictionary. What you get back depends on the API endpoint you're querying, and/or on the parameters. In this, it's giving you JSON. Others might give you text (see r.text for this representation), or bytes (r.content).

Python POST request does not take form data with no files

Before downvoting/marking as duplicate, please note:
I have already tried out this, this, this, this,this, this - basically almost all the methods I could find pointed out by the Requests documentation but do not seem to find any solution.
Problem:
I want to make a POST request with a set of headers and form data.
There are no files to be uploaded. As per the request body in Postman, we set the parameters by selecting 'form-data' under the 'Body' section for the request.
Here is the code I have:
headers = {'authorization': token_string,
'content-type':'multipart/form-data; boundary=----WebKitFormBoundaryxxxxxXXXXX12345'} # I get 'unsupported application/x-www-form-url-encoded' error if I remove this line
body = {
'foo1':'bar1',
'foo2':'bar2',
#... and other form data, NO FILE UPLOADED
}
#I have also tried the below approach
payload = dict()
payload['foo1']='bar1'
payload['foo2']='bar2'
page = ''
page = requests.post(url, proxies=proxies, headers=headers,
json=body, files=json.dump(body)) # also tried data=body,data=payload,files={} when giving data values
Error
{"errorCode":404,"message":"Required String parameter 'foo1' is not
present"}
EDIT:
Adding a trace of the network console. I am defining it in the same way in the payload as mentioned on the request payload.

There isn't any gui at all? You could get the network data from chrome, although:
Try this:
headers = {'authorization': token_string}
Probably there is more authorization? Or smthng else?
You shouldn't add Content-Type as requests will handle it for you.
Important, you could see the content type as WebKitFormBoundary, so for the payload you must take, the data from the "name" variable.
Example:
(I know you won't upload any file, it just an example) -
So in this case, for my payload would look like this: payload = {'photo':'myphoto'} (yea there would be an open file etc etc, but I try to keep it simple)
So your payload would be this-> (So always use name from the WebKit)
payload = {'foo1':'foo1data',
'foo2':'foo2data'}
session.post(url,data = payload, proxies etc...)
Important! As I can see you use the method from requests library. Firstly you always should create a session like this
session = requests.session() -> it will handle cookies, headers, etc, and won't open a new session, or plain requests with every requests.get/post.

Python requests module: urlencoding json data

I'm working on an API wrapper. The spec I'm trying to build to has the following request in it:
curl -H "Content-type:application/json" -X POST -d data='{"name":"Partner13", "email":"example#example.com"}' http://localhost:5000/
This request produces the following response from a little test server I setup to see exatly what headers/params etc are sent as. This little script produces:
uri: http://localhost:5000/,
method: POST,
api_key: None,
content_type: application/json,
params: None,
data: data={"name":"Partner13", "email":"example#example.com"}
So that above is the result I want my python script to create when it hits the little test script.
I'm using the python requests module, which is the most beautiful HTTP lib I have ever used. So here is my python code:
uri = "http://localhost:5000/"
headers = {'content-type': 'application/json' }
params = {}
data = {"name":"Partner13", "email":"example#exmaple.com"}
params["data"] = json.dumps(data)
r = requests.post(uri, data=params, headers=headers)
So simple enough stuff. Set the headers, and create a dictionary for the POST parameters. That dictionary has one entry called "data" which is the JSON string of the data I want to send to the server. Then I call the post. However, the result my little test script gives back is:
uri: http://localhost:5000/,
method: POST,
api_key: None,
content_type: application/json,
params: None,
data: data=%7B%22name%22%3A+%22Partner13%22%2C+%22email%22%3A+%22example%40example.com%22%7D
So essentially the json data I wanted to send under the data parameter has been urlendcoded.
Does anyone know how to fix this? I have looked through the requests documentation and cannot seem to find a way to not auto urlencode the send data.
Thanks very much,
Kevin

When creating the object for the data keyword, simply assign a variable the result of json.dumps(data).
Also, because HTTP POST can accept both url parameters as well as data in the body of the request, and because the requests.post function has a keyword argument named "params", it might be better to use a different variable name for readability. The requests docs use the variable name "payload", so thats what I use.
data = {"name":"Partner13", "email":"example#exmaple.com"}
payload = json.dumps(data)
r = requests.post(uri, data=payload, headers=headers)

Requests automatically URL encodes dictionaries passed as data here. John_GG's solution works because rather than posting a dictionary containing the JSON encoded string in the 'data' field it simply passes the JSON encoded string directly: strings are not automatically encoded. I can't say I understand the reason for this behaviour in Requests but regardless, it is what it is. There is no way to toggle this behaviour off that I can find.
Best of luck with it, Kevin.