Question

我是一个相当新的程序员，试图为RUSSEL3000中的每个股票提取谷歌日内股票数据，并将该数据放入CSV文件中。每个库存1个文件。我可以使用以下代码完成该任务，从而使用大熊猫从雅虎财务中提取的日常数据没有任何问题：

import pandas as pd
from pandas import DataFrame
import datetime, csv, pandas.io.data

def PullTicker(file='RUS3000.csv'):
    RUS3000 = []
    with open(file,'rb') as f:
                reader = csv.reader(f)
                for row in reader:
                    RUS3000.extend(row)

    for Ticker in RUS3000:
        Filename = Ticker+'.csv'
        StockData = pd.io.data.get_data_yahoo(Ticker,
                                        start=datetime.datetime(2004, 12, 5),
                                        end=datetime.datetime(2014, 12, 5))
        print Ticker,StockData.head(),'\n'
        StockData.to_csv(Filename)

PullTicker()

这是我用于GoogleFinance日内数据的代码，通过它我可以将我要打印的数据打印到终端：

import urllib,time,datetime
import pandas as pd
from pandas import DataFrame
import pandas.io.data
import csv

class Quote(object):

  DATE_FMT = '%Y-%m-%d'
  TIME_FMT = '%H:%M:%S'

  def __init__(self):
    self.symbol = ''
    self.date,self.time,self.open_,self.high,self.low,self.close,self.volume = ([] for _ in range(7))

  def append(self,dt,open_,high,low,close,volume):
    self.date.append(dt.date())
    self.time.append(dt.time())
    self.open_.append(float(open_))
    self.high.append(float(high))
    self.low.append(float(low))
    self.close.append(float(close))
    self.volume.append(int(volume))

  def to_csv(self):
    return ''.join(["{0},{1},{2},{3:.2f},{4:.2f},{5:.2f},{6:.2f},{7}\n".format(self.symbol,
              self.date[bar].strftime('%Y-%m-%d'),self.time[bar].strftime('%H:%M:%S'),
              self.open_[bar],self.high[bar],self.low[bar],self.close[bar],self.volume[bar]) 
              for bar in xrange(len(self.close))])

  def write_csv(self,filename):
    with open(filename,'w') as f:
      f.write(self.to_csv())

  def read_csv(self,filename):
    self.symbol = ''
    self.date,self.time,self.open_,self.high,self.low,self.close,self.volume = ([] for _ in range(7))
    for line in open(filename,'r'):
      symbol,ds,ts,open_,high,low,close,volume = line.rstrip().split(',')
      self.symbol = symbol
      dt = datetime.datetime.strptime(ds+' '+ts,self.DATE_FMT+' '+self.TIME_FMT)
      self.append(dt,open_,high,low,close,volume)
    return True

  def __repr__(self):
    return self.to_csv()

class GoogleIntradayQuote(Quote):
  ''' Intraday quotes from Google. Specify interval seconds and number of days '''
  def __init__(self,symbol,interval_seconds=300,num_days=5):
    super(GoogleIntradayQuote,self).__init__()
    self.symbol = symbol.upper()
    url_string = "http://www.google.com/finance/getprices?q={0}".format(self.symbol)
    url_string += "&i={0}&p={1}d&f=d,o,h,l,c,v".format(interval_seconds,num_days)
    csv = urllib.urlopen(url_string).readlines()
    for bar in xrange(7,len(csv)):
      if csv[bar].count(',')!=5: continue
      offset,close,high,low,open_,volume = csv[bar].split(',')
      if offset[0]=='a':
        day = float(offset[1:])
        offset = 0
      else:
        offset = float(offset)
      open_,high,low,close = [float(x) for x in [open_,high,low,close]]
      dt = datetime.datetime.fromtimestamp(day+(interval_seconds*offset))
      self.append(dt,open_,high,low,close,volume)


if __name__ == '__main__':
  q = GoogleIntradayQuote
  RUS3000 = []
  with open('RUS3000.csv','rb') as f:
                reader=csv.reader(f)
                for row in reader:
                    RUS3000.extend(row)

  for Ticker in RUS3000:
    Filename = Ticker+'.csv'
    StockData = q(Ticker,60,1)
    print StockData
    StockData.to_csv(Filename)

当我尝试使用pandas to_csv函数将数据保存到csv时，我收到错误：

Traceback (most recent call last):
  File "intraday.py", line 81, in <module>
    StockData.to_csv(Filename)
TypeError: to_csv() takes exactly 1 argument (2 given)

为什么我的类中的数据（分配给变量）计为两个参数，而使用pandas.io.data提取的数据效果很好？这是我在Stackoverflow上的第一个问题，我提前感谢任何帮助！谢谢。

TypeError：to_csv（）只取1个参数（给定2个） - Pandas模块

0 个答案: