烛台图:由于未来警告而替换in.resample()中的“how”

时间:2018-06-02 22:27:48

标签: python pandas pandas-groupby resampling candlestick-chart

我已将每日数据转换为烛台图表的每周数据。这是我的代码:

df['Date'] = pd.to_datetime(df['Date'])
df.set_index('Date', inplace=True)
df.sort_index(inplace=True)



def take_first(array_like):
    return array_like[0]

def take_last(array_like):
    return array_like[-1]

output = df.resample('W',                                 # Weekly resample
                    how={'Date2': take_first,
                        'Open': take_first, 
                         'High': 'max',
                         'Low': 'min',
                         'Close': take_last,
                         'Volume': 'sum'}, 
                    loffset=pd.offsets.timedelta(days=-6))  # to put the labels to Monday

df = output[['Date2','Open', 'High', 'Low', 'Close', 'Volume']]

但是,我收到以下警告:

FutureWarning: how in .resample() is deprecated
the new syntax is .resample(...)..apply(<func>)

我试图这样做但是无法正确执行,导致错误。如何更改它,以便它符合警告?

0 个答案:

没有答案