How to create a program that enters the web and takes data from the stock exchange

Question

Well my idea is to create a program that takes the data of cryptocurrency quotations for me to monitor, but I don’t know how to take this data live and make the program stay updating the data.

Answer 1

You can use the suggestions of:

API for stock exchange quotation

Sane all via HTTP and paid, the only one marked as free is for the Excel program and I don’t think will serve for this, the example that seems more interesting is Bolsafinanceira, follows the link of how to use:

• http://www.bolsafinanceira.com/api-doc.pdf

Price tables:

• http://www.bolsafinance.com/site/api#quote-tab-3

Using with Python 3

In Python 3 you can use urllib.request with json

import json
import urllib.request

url = "http://api.bolsafinanceira.com:8080/composition/?token=<seu-token>&codelist=ibovespa,ibrx50"

with urllib.request.urlopen(urlData) as f:
   data = f.read()
   encoding = f.info().get_content_charset('utf-8')
   json.loads(data.decode(encoding))

Or use the import requests

To install use the command:

 pip install requests

Or pipenv (depends on your environment)

 pipenv install requests

Should stay like this:

import requests

url = 'http://api.bolsafinanceira.com:8080/composition/?token=<seu-token>&codelist=ibovespa,ibrx50';

r = requests.get(url, print=pretty')

# Exibe a resposta
print(r.json())