Python if 语句：交易逻辑基于我的入场位置，然后基于操作设置变量

Question

我正在努力从交易 API 中获取当前买卖价格，将其与我买入的头寸进行比较，然后采取适当的行动 - 卖出或买入

由于交易费用，有卖出价和买入价

有 5 个组成部分：

我得到股票的起始买入价
股票的当前买入价
股票的当前卖出价
之前的买入价（我买入股票的位置）
之前的卖出价（我卖出股票的价格）

我需要看看相对于我的起始位置的第一个价格变化是多少，如果我可以买低，然后买；如果我能卖得更多，卖掉。但我想重复很多很多次。

因此，如果我买入更多，设置之前的买入价，然后如果当前卖出价高于该价，则卖出。那么买方也一样

这是我需要帮助放入 if 语句的逻辑：

  Start_buy_price = 100

Start scenario 1:

# buy price from start price drops to 90
  buy_price = 90:
   buy_price < start_buy_price:
    buy!
    set previous_buy_price = buy_price

# price to sell then rises to 95
  sell_price = 95
   sell_price > previous_buy_price:
    Sell!
    set previous_sell_price = sell_price

Start scenario 2:

# price to sell rises to 105
  sell_price = 105
   sell_price > start_buy_price:
    Sell!
    set previous_sell_price = sell_price

# price to buy then falls to 100
  buy_price = 100
   buy_price < previous_sell_price:
    Buy!
    set previous_buy_price = buy_price

----------------------------------------------------------------------

  Following run through of the code:

Following scenario 1:

# price to buy is lower than previous sell price
buy_price < previous_sell_price:
 Buy!
 set previous_buy_price = buy_price

# price to sell is higher than previous buy price
sell_price < previous_buy_price:
 Sell!
 set previous_sell_price = sell_price

repeat!

我已经盯着这个看了大约 3 个小时，试图在 Python 中完成它。到目前为止，这是我的代码：

def run_this_code():
    start_buy_price = 100 # enter what I bought in at

    get_buy_price = client.get_buy_price(buy_price)
    get_sell_price = client.get_sell_price(sell_price)
    buy_price = float(get_buy_price['amount'])
    sell_price = float(get_sell_price['amount'])

    if buy_price < start_buy_price:
        action = 'Buy!'
        previous_buy_price = buy_price

    if sell_price > start_buy_price:
        action = 'Sell!'
        previous_sell_price = sell_price

    if previous_buy_price !=None:
       if sell_price > previous_buy_price:
         action = 'Sell!'
         previous_sell_price = sell_price

    if previous_sell_price !=None:
       if buy_price < previous_sell_price:
         action = 'Buy!'
         previous_buy_price = buy_price

    print(action,'start_buy:', start_buy_price,'buy:', buy_price,'sell:', sell_price)

    pass

run_this_code()

我真的在这里苦苦挣扎，请有人帮助将我在第一个缩进文本块中的 if 语句转换为 python 可以运行多次的代码

Answer 1

这四行是奇数：

get_buy_price = client.get_buy_price(buy_price)
get_sell_price = client.get_sell_price(sell_price)
buy_price = float(get_buy_price['amount'])
sell_price = float(get_sell_price['amount'])

你的前两个调用函数，但参数似乎没有在任何地方定义。您的后两个依赖于对前两个调用的响应都是字典，如果不存在参数，这将很困难。

您可能还想查看 "While"/"For" 循环，因为它们有助于 "lots and lots of times"。

Answer 2

我明白了！

这是你给它买的价格，100 英镑。然后我调用 API 寻找卖出价。如果售价低于 100 英镑，则卖出并将之前的售价设置为该价格。如果购买价格低于之前的价格，则购买。然后进入下一个循环，只有在我获得折扣或利润时才执行买入或卖出，并且只有在相同的操作没有连续重复的情况下

timeout = 15.0 

start_buy_price = 100

profit = 0

client = Client
get_buy_price = client.get_buy_price
get_sell_price = client.get_sell_price
buy_price = float(get_buy_price) 
sell_price = float(get_sell_price)

while (sell_price < start_buy_price):
    client = Client
    get_buy_price = client.get_buy_price
    get_sell_price = client.get_sell_price
    buy_price = float(get_buy_price)
    sell_price = float(get_sell_price)

action = 'Start Sell!'
previous_action = 'Sell'
previous_sell_price = sell_price
profit = sell_price-start_buy_price
pass

while action == 'Start Sell!':
    client = Client
    get_buy_price = client.get_buy_price
    get_sell_price = client.get_sell_price
    buy_price = get_buy_price['amount']
    sell_price = get_sell_price['amount']
    time.sleep(timeout)

    if float(buy_price) < float(previous_sell_price):
        action = 'Buy!'
        previous_buy_price = buy_price
        time.sleep(timeout)

while start_buy_price > 0:
    client = Client()
    get_buy_price = client.get_buy_price
    get_sell_price = client.get_sell_price
    buy_price = get_buy_price['amount']
    sell_price = get_sell_price['amount']

    if float(buy_price) < float(previous_sell_price) and action == 'Sell!':
        action = 'Buy!'
        previous_buy_price = buy_price
        time.sleep(timeout)

    if float(sell_price) > float(previous_buy_price) and action == 'Buy!':
        action = 'Sell!'
        previous_sell_price = sell_price
        profit = profit + float(sell_price)-float(previous_buy_price)
        time.sleep(timeout)

Python if 语句：交易逻辑基于我的入场位置，然后基于操作设置变量

Python if statements: Trading logic based on my entry position, then setting variables based on action

python

algorithm

if-statement

logic

trading

我已经盯着这个看了大约 3 个小时，试图在 Python 中完成它。到目前为止，这是我的代码：