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Hi
I got the following error when I tried to import requests or to use urllib packages.

42 | 20:42:56: 

Build Warning: File: n/a Line:0 Column:0 - Sorry, 'open(' is not whitelisted within QuantConnect. Remove this code statement

 43 | 20:42:57: 

Build Warning: File: n/a Line:0 Column:0 - Sorry, 'open(' is not whitelisted within QuantConnect. Remove this code statement

 44 | 20:43:00: 

Build Warning: File: n/a Line:0 Column:0 - Sorry, 'open(' is not whitelisted within QuantConnect. Remove this code statement

 45 | 20:43:18: 

Build Error: File: test.py Line:1 Column:0 - ImportError: No module named requests

 46 | 20:43:38: 

Build Error: File: test.py Line:1 Column:0 - ImportError: No module named requests

 47 | 20:45:24: 

Build Error: File: test.py Line:1 Column:0 - ImportError: No module named requests

Are Python packages requests and urllib not allowed to use on QuantConnect cloud servers?

Also, any plans to support Python 3.x ?

Thanks

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Alexandre Catarino

100.3k Pro ,

What is the file format? If it is csv, you can use pandas.read_csv:

import pandas as pd



url = "https://www.dropbox.com/s/2az14r5xbx4w5j6/daily-stock-picker-live.csv?dl=1"

df = pd.read_csv(url, header = None)

We have no plans to support Python 3.x. Our focus is on making the current python implementation better.

CloudTrader

491 Pro ,

Hi Alexandre,

Thanks. Format is JSON. What I want to do is a REST API call like this:

url = "https://<sentiment analysis web service>"

response = requests.get(url, auth=(user, token))

response is returned by REST API endpoint as JSON data.

Alexandre Catarino

100.3k Pro ,

For security reasons, we cannot whitelist urllib nor requests. Since pandas.read_csv or pandas.read_json will not work for your case, you can try to implement a custom data data feed.
However, we know that in some cases none of the above will suffice, therefore we will work on a feature that implement enable us to fetch data from an url. Something like:

url = "https://<sentiment analysis web service>"

response = self.Download(url, user, token)

CloudTrader

491 Pro ,

Alexandre, this would be really very useful to have such implementation added to LEAN. Many thanks!

Alexandre Catarino

100.3k Pro ,

We have merged the solution. It works like this:

url = "https://<sentiment analysis web service>"

auth = {"user": "CloudTrader", "token": "mysupersecrettoken"}

response = self.Download(url, auth)

where response is a string.

CloudTrader

491 Pro ,

Alexandre, this is awesome! Is this the C# method declaration, which it was named before Fetch?

public string Download(string address, PyObject headers = null, string userName = null, string password = null)

Alexandre Catarino

100.3k Pro ,

Yes, this is it. We rename me for clarity.

CloudTrader INVESTOR

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