symbols: Get all trading symbols

curl 'https://api.blockchain.com/v3/exchange/symbols'

import requests

resp = requests.get("https://api.blockchain.com/v3/exchange/symbols")
data = resp.json()

import zingu_apis

api = zingu_apis.api("blockchain.com")
result = api.fetch("symbols")

for item in result:
    print(item)

const resp = await fetch("https://api.blockchain.com/v3/exchange/symbols");
const data = await resp.json();