market-price: Get historical market price

curl 'https://blockchain.info/charts/market-price?timespan=30days'

import requests

resp = requests.get(
    "https://blockchain.info/charts/market-price",
    params={
        'timespan': '30days',
    },
)
data = resp.json()

import zingu_apis

api = zingu_apis.api("blockchain")
result = api.fetch("charts/market-price", timespan="30days")

for item in result:
    print(item)

const resp = await fetch("https://blockchain.info/charts/market-price?timespan=30days");
const data = await resp.json();