from decimal import *

def f(a, b):
    from binance.client import Client
    #import decimal
    getcontext().prec = 8
    liczbaA = Decimal(0.8)
    liczbaB = Decimal(0.999)
    bottomLimitMnoznik = Decimal(0.95)
    client = Client(a, b)
    amount = Decimal(input("Ilosc: "))
    str = input("Coin: ")
    str = str + "BTC"
    order={'executedQty': '0.1','price': '0.1'}
    info = client.get_symbol_info(str)
    liczbaC = Decimal(info['filters'][1]['stepSize'])
    old = Decimal(client.get_orderbook_ticker(symbol=str)['askPrice'])
    amount = amount / old
    amount = amount - amount % liczbaC

    test = True
    last = "sell"
    while test:
        #new = 0
        #for i in range(1, 4):
        #    new += Decimal(client.get_symbol_ticker(symbol=str)['price'])
        #new = new / 3
        new = Decimal(client.get_symbol_ticker(symbol=str)['price'])
        print(new/old)
        print(new / old < liczbaB)
        print(last == "buy")
        if new / old > 1 / liczbaB and last == "sell":
            order2 = client.order_market_buy(
                symbol=str,
                quantity=amount)
            print("Buy:")
            print(order2)
            amount = order2['executedQty']
            last = "buy"
            #new = 0
            #for i in range(1, 4):
            #    new += Decimal(client.get_symbol_ticker(symbol=str)['price'])
            #new = new / 3
        old = new
        if new / old < liczbaB and last == "buy":
            order2 = client.order_market_sell(
                symbol=str,
                quantity=amount)
            print("Sell")
            print(order2)
            amount = order2['executedQty']
            last = "sell"
        old = new