的修改

Question

我正在使用Python和Pandas。

我在下面的代码中读取了亚马逊股票的信息：

import gspread
from oauth2client.service_account import ServiceAccountCredentials
import pprint
import datetime as dt
import matplotlib.pyplot as plt
from matplotlib import style
from scipy.signal import argrelextrema
from pandas_datareader import data as pdr
import fix_yahoo_finance as yf
import pandas as pd


def sample_reading_from_yahoo():
    # setting plotting, start  / end date and time
    style.use('ggplot')

    # setting up the date and time
    start = dt.datetime(2017, 1, 1)
    end = dt.date.today()

    # pull back the data
    yf.pdr_override()
    #data = pdr.get_data_yahoo("AMZN", start, end="2017-09-12")

    data = pdr.get_data_yahoo("AMZN", start, end)

    data = data.rename(columns={'Open': 'open'})
    data = data.rename(columns={'High': 'high'})
    data = data.rename(columns={'Low': 'low'})
    data = data.rename(columns={'Close': 'close'})
    data = data.rename(columns={'Adj Close': 'adjusted'})
    data = data.rename(columns={'Volume': 'vol'})

    data = data.drop_duplicates(keep=False)

    data = data[['open', 'high', 'low', 'close', 'vol']]
    return data


# MAIN
data = sample_reading_from_yahoo()
print(data)

输出如下所示：

                   open         high          low        close       vol
Date                                                                    
2017-01-03   757.919983   758.760010   747.700012   753.669983   3521100
2017-01-04   758.390015   759.679993   754.200012   757.179993   2510500
2017-01-05   761.549988   782.400024   760.260010   780.450012   5830100
2017-01-06   782.359985   799.440002   778.479980   795.989990   5986200
2017-01-09   798.000000   801.770020   791.770020   796.919983   3440100
2017-01-10   796.599976   798.000000   789.539978   795.900024   2558400

每当我按照以下方式更改MAIN区域时，

# MAIN

data = sample_reading_from_yahoo()
print(data)

data.Date = pd.to_datetime(data.Date, format='%d.%m.%Y %H:%M:%S.%f')

data.set_index(data.Date)

我收到错误

Traceback（最近一次调用最后一次）：文件＆＃34; C：/Users/dgmufasa/PycharmProjects/Opportunities/Opportunities.py" ;, 第96行，in data = sample_reading_from_yahoo（）File＆＃34; C：/Users/dgmufasa/PycharmProjects/Opportunities/Opportunities.py"，第86行，在sample_reading_from_yahoo中 data.Date = pd.to_datetime（data.Date，format =＆＃39;％d。％m。％Y％H：％M：％S％f＆＃39;）文件＆＃34; C：\ WORK \ SOFTWARE \ Python64bitv3.6 \ lib中\站点包\大熊猫\芯\ generic.py＆＃34 ;, 第3614行， getattr return object。 getattribute （self，name）AttributeError：＆＃39; DataFrame＆＃39;对象没有属性＆＃39;日期＆＃39;

我该如何解决这个问题？

的修改

@CK Chen - 感谢您的回复。

我做了以下更改：

def sample_reading_from_yahoo():
    [... snip ...]

    #print(data['vol'])

    data = data.drop_duplicates(keep=False)

    data = data[['open', 'high', 'low', 'close', 'vol']]
    return data

# MAIN

data = sample_reading_from_yahoo()

#print(data.index)

data['datetime_index'] = pd.to_datetime(data.index, format='%m-%d-%Y %H:%M:%S')
data.set_index('datetime_index')

print('THIS THE DATA RESULT')
print(data)

得到了结果：

THIS THE DATA RESULT
                   open         high          low        close       vol  \
Date                                                                       
2017-01-03   757.919983   758.760010   747.700012   753.669983   3521100   
2017-01-04   758.390015   759.679993   754.200012   757.179993   2510500   
2017-01-05   761.549988   782.400024   760.260010   780.450012   5830100    

           datetime_index  
Date                       
2017-01-03     2017-01-03  
2017-01-04     2017-01-04  
2017-01-05     2017-01-05

似乎时间格式没有改变。我做错了什么？

TIA

Answer 1

＆＃39;日期＆＃39;是dataframe的index.name。
你可以尝试：

data['datetime_index'] = pd.to_datetime(data.index, format='%Y-%m-%d')
data.set_index('datetime_index')

使用python和pandas读取yahoo数据时出错

的修改

1 个答案: