crypto

#!/usr/bin/env python3
# coding=utf-8

import json
from requests import Request, Session
from requests.exceptions import ConnectionError, Timeout, TooManyRedirects
import os
import sys

API_KEY = "YOUR-COINMARKETCAP-API-KEY-HERE"
PRICE_CHANGE_PERIOD = '1h' # Available: '1h', '24h', '7d'
PRICE_CHANGE_URGENT_PERCENT = 10

API_URL = 'https://pro-api.coinmarketcap.com/v1/cryptocurrency/quotes/latest'
coin = os.environ.get('BLOCK_INSTANCE', 'bitcoin')

parameters = {
    'slug': coin
}
headers = {
    'Accepts': 'application/json',
    'X-CMC_PRO_API_KEY': API_KEY,
}

session = Session()
session.headers.update(headers)

r = session.get(API_URL, params=parameters)
data = json.loads(r.text)['data']
data = data[list(data.keys())[0]]

base = 'USD'
quote = data['quote'][base]
price = float(quote['price'])

# Only USD as base currently supported by free version of Coinmarketcap API, AFAIK
if price > 100: precision = 0
elif price > 0.1: precision = 2
else: precision = 6

percentChange = float(quote['percent_change_' + PRICE_CHANGE_PERIOD])
percentChangeFormat = '<span color="{}">{}{:.2f}%</span>'
if percentChange > 0: percentChangeInfo = percentChangeFormat.format('#3BB92D', '🠕 ', percentChange)
elif percentChange == 0: percentChangeInfo = percentChangeFormat.format('#CCCCCC', '', percentChange)
else: percentChangeInfo = percentChangeFormat.format('#F7555E', '🠗 ', percentChange)

print(('{} {:.' + str(precision) + 'f} {}').format(data['symbol'], price, percentChangeInfo)) # Full Text
print(('{} {:.' + str(precision) + 'f}').format(data['symbol'], price)) # Short Text

if percentChange > PRICE_CHANGE_URGENT_PERCENT:
    exit(33)