coindropnotifier.py

import requests
import time

DROP_TIME_IN_SECONDS = 5 * 60
REFRESH_PERIOD = 20

old_data = []

while True:
    req = requests.get("https://api.binance.com/api/v3/ticker/price")
    if req.status_code == 429:
        print("Spam limit reached, waiting 5 seconds..")
        time.sleep(5)
        continue
    elif req.status_code != 200:
        print("Error: Request has status code {0}; {1}".format(req.status_code, req.text))
        input()
        continue

    data = req.json()
    current_price = {}
    for obj in data:
        if "BTC" in obj["symbol"]:
            current_price[obj["symbol"].replace("BTC", "")] = float(obj["price"])
    # USDT is special because it's the BTC price relative to USDT, not USDT price relative to BTC
    current_price["USDT"] = 1.0 / current_price["USDT"]

    old_data.append(current_price)
    print("-------------------------------------------------------")
    if len(old_data) > DROP_TIME_IN_SECONDS / REFRESH_PERIOD:
        old_price = old_data.pop(0)
        for symbol in sorted(list(current_price.keys())):
            if old_price[symbol] > current_price[symbol]:
                percent_drop = 100 * (old_price[symbol]-current_price[symbol]) / old_price[symbol]
                if percent_drop > 1:
                    print("{0} dropped by {1}% over the last {2} minutes".format(symbol, percent_drop, int(DROP_TIME_IN_SECONDS / 60)))

    time.sleep(REFRESH_PERIOD)