Question

我必须检查股票期权缺少的日期，并且我想通过for循环进行操作。但是

“'（slice（0，155，None），slice（None，None，None））'是无效的键”

显示为错误，我不知道为什么。

首先，它是datetime64[ns]类型，我已经尝试将其转换为字符串。但是，它似乎没有帮助。这是我的代码：

def days(data, alldays):
days = np.zeros((len(data),1))
companies = ["AAPL", "AXP", "BA", "CAT", "CSCO", "CVX", "DIS", "DJX", "GS", "HD", "IBM", "INTC", "JNJ", \
    "JPM", "KO", "MCD", "MMM", "MRK", "MSFT", "NKE", "PFE", "PG", "TRV", "UNH", "UTX", "V", "VZ", "WBA", "WMT", "XOM"]
d = {}
for i, firm in enumerate(data):
    firms = data[i]
    days[i] = len(firms.date.unique())
    firmdays = firms.date.unique()
    counter = 0
    if days[i] < 3730:
        print(firms.ticker.unique(), len(firms), days[i])
    elif days[i] < len(alldays) and days[i]>=3730:
        d[companies[i]] = np.zeros((582348,6))
        breakpoint()
        for j in range(3733):
            breakpoint()
            if alldays[j] not in  firmdays:
                breakpoint()
                print(firms.ticker.unique(), alldays[j])
                for k, data in enumerate(np.zeros((582348,6))):
                    d[companies[i]][k:k+155,:] = firms[k-156 - counter*156:k-1- 156*counter,:]
                counter = counter +1
            else:
                for k, data in enumerate(np.zeros((582348,6))):
                    d[companies[i]][k:k+155,:] = firms[k- counter*156:k+155 - 156*counter,:]
    print(firms.ticker.unique(), len(firms), days[i])
return days

它在第"if alldays[j] not in firmdays:"行给出了错误，即

'(slice(0, 155, None), slice(None, None, None))' is an invalid key

Answer 1

看着错误，问题似乎更多在于在该行上使用了切片符号（=符号之前的部分）：

d[companies[i]][k:k+155,:] = firms[k- counter*156,:]

不确定您要达到的目标，但请看一下这篇文章：https://stackoverflow.com/a/509295/6203472

我的for循环不会遍历python中的字符串

1 个答案: