【发布时间】：2022-01-11 04:48:30
【问题描述】：
我不太确定如何做最后一部分，即字典部分和股票代码部分，还有 在 “”file = open("/home/ubuntu/environment/hw5/" + tickers + ".txt")""" 此行一直显示
TypeError: 必须是 str，而不是 list
关于如何修复这些问题或使代码正常工作的任何建议？
这是我的代码
import json
def meanReversionStrategy(prices):
total_profit = 0
first_buy = None
buy = 0
for i in range(len(prices)):
if i >= 5:
current_price = prices[i]
moving_average = (prices[i-1] + prices[i-2] + prices[i-3] + prices[i-4] +prices[i-5]) / 5
if current_price < moving_average * 0.95 and buy == 0:
buy = current_price
print("buy at: ",round (current_price,2))
if first_buy is None:
first_buy = buy
elif current_price > moving_average * 1.05 and buy != 0:
print("sell at: ", round(current_price,2))
print("trade profit: ", round(current_price - buy,2))
total_profit = current_price - buy
buy = 0
final_profit_percentage = ( total_profit / first_buy ) * 100
print("First buy: " , round(first_buy,2))
print("Total profit: " , round(total_profit, 2))
print("Percentage return: ", round(final_profit_percentage, 2),"%")
def simpleMovingAverageStrategy(prices):
i = 0
buy = 0
total_profit = 0
first_buy = 0
for p in prices:
if i >= 5:
moving_average = (prices[i-1] + prices[i-2] + prices[i-3] + prices[i-4] +
prices[i-5]) / 5
#simple moving average logic, not mean
if p > moving_average and buy == 0: #buy
print("buying at: ", p)
buy = p
if first_buy == 0:
first_buy = p
elif p < moving_average and buy != 0: #sell
print("selling at: ", p)
print("trade profit: ", p - buy)
total_profit += p - buy
buy = 0
i += 1
final_percentage = (total_profit / first_buy) * 100
print("first buy: ", first_buy)
print("total profit: ", total_profit)
print("final percentage: ", final_percentage, "%")
return total_profit, final_percentage
tickers = ["AAPL1" , "ADBE" , "BA", "CMCSA", "CSCO", "CVS", "GOOG", "TLSYY","TM"]
file = open("/home/ubuntu/environment/hw5/" + tickers + ".txt")
lines = file.readlines()
# print(lines)
prices = []
for line in lines:
prices.append(float(line))
profit, returns = simpleMovingAverageStrategy(prices)
results = {}
results["AAPL1_profit"] =profit
results["AAPL1_returns"] = returns
json.dump(results, open("/home/ubuntu/environment/hw5/results.json", "w") )
编码要求
-创建一个名为 meanReversionStrategy 的函数，它接受一个名为“prices”的列表作为参数。该函数运行均值回归策略，并将策略的买卖输出到控制台（就像您在 HW4 中所做的那样）。函数返回利润和最终收益百分比。
-创建一个名为 simpleMovingAverageStrategy 的函数，该函数将一个名为“价格”的列表作为参数。该函数运行一个简单移动平均线策略，并将策略的买入和卖出输出到控制台。函数返回利润和最终收益百分比。
-创建一个名为 saveResults 的函数，该函数将字典作为参数。将字典保存到名为“results.json”的 json 文件中。
遍历代码列表
在代码中的代码：
-load prices from a file <ticker>.txt, and store them in the results dictionary with the
key “<ticker>_prices”
-call meanReversionStrategy(prices) and store the profit and returns in the results
dictionary with the keys “<ticker>_mr_profit” and “<ticker>_mr_returns”
-call simpleMovingAverageStrategy(prices) and store the profit and returns in the
results dictionary with the keys “<ticker>_sma_profit” and “<ticker>_sma_profit”
with the keys “ticker_mr_profit” and “ticker_mr_returns”
调用 saveResults(results) 并将结果字典保存到名为 results.json 的文件中
【问题讨论】：
-
关于如何改进这个问题的一些建议： - 提供一个有意义的标题，无需阅读整个问题即可理解 - 将您的问题一次限制为一个问题。不要问解决你完整的家庭作业，它可能会冒犯人们，并且不是stackoverflow的问答主题。与此相关：尝试提供一个最小的示例和问题。
-
知道了！非常感谢！
标签： python json dictionary