Pandas: AttributeError: 'float' object has no attribute 'MACD'

Question

我想比较 pandas 数据框中的 2 行，但我总是收到一条错误消息：AttributeError: 'float' object has no attribute 'MACD'.

这是 df:

time    open    high    low close   tick_volume spread  real_volume EMA_LONG    EMA_SHORT   MACD    SIGNAL  HIST    200EMA
0   2018-01-05 03:00:00 1.20775 1.20794 1.20700 1.20724 2887    1   0   1.206134    1.206803    0.000669    0.000669    0.000000    1.207240
1   2018-01-05 04:00:00 1.20723 1.20743 1.20680 1.20710 2349    1   0   1.206216    1.206849    0.000633    0.000649    -0.000016   1.207170
2   2018-01-05 05:00:00 1.20709 1.20755 1.20709 1.20744 1869    1   0   1.206318    1.206941    0.000622    0.000638    -0.000016   1.207261

现在我想根据行中的一些信息计算它会买卖多少次，所以我尝试像这样遍历它：

buy = 0
sell = 0

for i, row in df.iterrows():
    if i == 0:
        continue
    if row.MACD > row.SIGNAL and row[i - 1].MACD < row[i - 1].SIGNAL:
        if row.HIST < 0 and row.MACD > row['200EMA'] and row.SIGNAL > row['200EMA']:
            buy += 1
    elif row.MACD < row.SIGNAL and row[i - 1].MACD > row[i - 1].SIGNAL:
        if row.HIST > 0 and row.MACD < row['200EMA'] and row.SIGNAL < row['200EMA']:
            sell += 1

print("BUY: " + buy + "SELL: " + sell)

我收到以下错误：

AttributeError: 'float' object has no attribute 'MACD'
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-75-ff4a2b3629bc> in <module>
      8         if row.HIST < 0 and row.MACD > row['200EMA'] and row.SIGNAL > row['200EMA']:
      9             buy += 1

---> 10     elif row.MACD < row.SIGNAL and row[i - 1].MACD > row[i - 1].SIGNAL:
     11         if row.HIST > 0 and row.MACD < row['200EMA'] and row.SIGNAL < row['200EMA']:
     12             sell += 1

AttributeError: 'float' object has no attribute 'MACD'

我知道这里已经出现了这个错误，但是那里的解决方案对我没有帮助。

已经谢谢你了！

Answer 1

你的问题在他这里行[i - 1].MACD

当您访问第 [i-1] 行时，您将获得该位置在服务中的值如果 i = 1 那么你将获得该行的行 [0] 而不是数据框中的 preivice 行你应该通过 df.iloc[i-1].MACD

切换它

Pandas: AttributeError: 'float' object has no attribute 'MACD'

Pandas: AttributeError: 'float' object has no attribute 'MACD'

python

row

dataframe

pandas