Question

由于雅虎停止了他们的API支持pandas datareader现在失败

import pandas_datareader.data as web
import datetime
start = datetime.datetime(2016, 1, 1)
end = datetime.datetime(2017, 5, 17)
web.DataReader('GOOGL', 'yahoo', start, end)

HTTPError: HTTP Error 401: Unauthorized

是否有任何非官方图书馆允许我们暂时解决问题？ Quandl上还有什么东西吗？

Answer 1

我通过＆＃34; fix-yahoo-finance＆＃34;找到了解决方法。在https://pypi.python.org/pypi/fix-yahoo-finance中很有用，例如：

from pandas_datareader import data as pdr
import fix_yahoo_finance

data = pdr.get_data_yahoo('APPL', start='2017-04-23', end='2017-05-24')

请注意，最后2个数据列的顺序为＆＃39; Adj Close＆＃39;和＆＃39;卷＆＃39;即。不是以前的格式。重新索引：

cols = ['Date', 'Open', 'High', 'Low', 'Close', 'Volume', 'Adj Close']
data.reindex(columns=cols)

Answer 2

所以他们已经改变了他们的网址，现在使用cookie保护（可能还有javascript）所以我用dryscrape修复了我自己的问题，它模拟了一个浏览器这只是一个FYI，因为这肯定会打破他们的条款和条件......所以使用风险自负？我正在考虑Quandl的替代EOD价格来源。

我无法通过cookie浏览CookieJar，所以我最终使用dryscrape来“伪造”用户下载

import dryscrape
from bs4 import BeautifulSoup
import time
import datetime
import re

#we visit the main page to initialise sessions and cookies
session = dryscrape.Session()
session.set_attribute('auto_load_images', False)
session.set_header('User-agent', 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95     Safari/537.36')    

#call this once as it is slow(er) and then you can do multiple download, though there seems to be a limit after which you have to reinitialise...
session.visit("https://finance.yahoo.com/quote/AAPL/history?p=AAPL")
response = session.body()


#get the dowload link
soup = BeautifulSoup(response, 'lxml')
for taga in soup.findAll('a'):
    if taga.has_attr('download'):
        url_download = taga['href']
print(url_download)

#now replace the default end date end start date that yahoo provides
s = "2017-02-18"
period1 = '%.0f' % time.mktime(datetime.datetime.strptime(s, "%Y-%m-%d").timetuple())
e = "2017-05-18"
period2 = '%.0f' % time.mktime(datetime.datetime.strptime(e, "%Y-%m-%d").timetuple())

#now we replace the period download by our dates, please feel free to improve, I suck at regex
m = re.search('period1=(.+?)&', url_download)
if m:
    to_replace = m.group(m.lastindex)
    url_download = url_download.replace(to_replace, period1)        
m = re.search('period2=(.+?)&', url_download)
if m:
    to_replace = m.group(m.lastindex)
    url_download = url_download.replace(to_replace, period2)

#and now viti and get body and you have your csv
session.visit(url_download)
csv_data = session.body()

#and finally if you want to get a dataframe from it
import sys
if sys.version_info[0] < 3: 
    from StringIO import StringIO
else:
    from io import StringIO

import pandas as pd
df = pd.read_csv(StringIO(csv_data), index_col=[0], parse_dates=True)
df

Answer 3

我从雅虎改为Google财经，它适合我，所以从

data.DataReader(ticker, 'yahoo', start_date, end_date)

到

data.DataReader(ticker, 'google', start_date, end_date)

并改编了我的＆＃34; old＆＃34;雅虎符号来自：

tickers = ['AAPL','MSFT','GE','IBM','AA','DAL','UAL', 'PEP', 'KO']

到

tickers = ['NASDAQ:AAPL','NASDAQ:MSFT','NYSE:GE','NYSE:IBM','NYSE:AA','NYSE:DAL','NYSE:UAL', 'NYSE:PEP', 'NYSE:KO']

Answer 4

试试这个：

import certifi
import urllib3
http = urllib3.PoolManager(
    cert_reqs='CERT_REQUIRED',
    ca_certs=certifi.where())
http.request('GET', 'https://dormi.kongju.ac.kr/main/contents/food.php?mid=40&k=2')
<urllib3.response.HTTPResponse object at 0x7fab2c8c40f0>
r = http.request('GET', 'https://dormi.kongju.ac.kr/main/contents/food.php?mid=40&k=2')
print(r.data)

Answer 5

让线程在每个数据之后读取之间休眠。可能大部分时间都在工作，所以尝试5-6次并将数据保存在csv文件中，以便下次你可以从文件中读取。

### code is here ###
import pandas_datareader as web
import time
import datetime as dt
import pandas as pd

symbols = ['AAPL', 'MSFT', 'AABA', 'DB', 'GLD']
webData = pd.DataFrame()
for stockSymbol in symbols:
    webData[stockSymbol] = web.DataReader(stockSymbol, 
    data_source='yahoo',start= 
               startDate, end= endDate, retry_count= 10)['Adj Close']   
    time.sleep(22) # thread sleep for 22 seconds.

Answer 6

雅虎金融与大熊猫合作良好。像这样使用它：

import pandas as pd
import pandas_datareader as pdr
from pandas_datareader import data as wb

ticker='GOOGL'
start_date='2019-1-1'
data_source='yahoo'

ticker_data=wb.DataReader(ticker,data_source=data_source,start=start_date)
df=pd.DataFrame(ticker_data)

Answer 7

fix_yahoo_finance软件包的名称已更改为yfinance。所以你可以尝试这段代码

import yfinance as yf
data = yf.download('MSFT', start = '2012-01-01', end='2017-01-01')

Python pandas datareader不再适用于yahoo-finance更改的URL

7 个答案: