Question

我是Python新手，我想创建一个执行以下操作的程序：

使用此list = [aapl,goog,jnj,msft]作为输入
转到网址"https://finance.google.com/finance/historical?q=goog&output=csv"并将"goog"替换为上面列表中的代码
最后将CSV文件保存到文件系统中。

图片包含我能够想到的代码

from urllib import request
ticker_list = "aapl"
response = request.urlretrieve("https://finance.google.com/finance/historical?q="+ticker_list+"&output=csv",'D:/LatestStockFile.csv')
#[aapl,goog,xom,ge,msft,bp,c,pg,wmt,pfe,tm,jnj] 
# I want tickers from this list to append instead of ticker_list

# also if possible a different file name to save for each iteration of ticker
# example : say ticker = "aaple" then this "aapl" should be appended to url and path: "D:/Apple.csv"

def download_csv(ticker,path):
    response = request.urlretrieve(ticker,path)

def user_input():
 choice = input("enter choice: 1/2/3\n")
 if choice == 1:
  download_csv("aapl","D:/Apple.csv")
 elif choice == 2:
  download_csv=("goog","D:/Google.csv")
 elif choice == 3:
  download_csv("jnj","D:/Johnson.csv")

user_input()

Answer 1

import requests
if __name__ == '__main__':
    list = ["aapl", "goog", "jnj", "msft"]
    for items in list:
        req = requests.get('https://finance.google.com/finance/historical?q=' + items + '&output=csv')
        with open(items+".csv","w") as file:
            file.write(req.text)

Answer 2

GarfieldCat的答案有利于其用例，但并未直接解决您将库存名称作为CSV文件名的请求。它只是股票名称。

您可以做的是定义字典键值数据结构以保存公司名称和股票名称。例如，将现有列表调整为：

stocks =  [
    {
        'ticker': 'aapl',
        'company: 'Apple'
    },
    {
        'ticker: 'goog',
        'company: 'Google'
    },
    ...
    ...
]

然后使用GarfieldCat中的代码，仅适用于从字典中提取数据：

for item in stocks:
    url = 'https://finance.google.com/finance/historical?q={}&output=csv'.format(item.get('ticker')) 
    req = requests.get(url)
    with open('{}.csv'.format(item.get('company')), 'wb') as f:
       f.write(req.text)

如果您仍然对此有疑问，我建议您查看request库文档，了解如何从请求中获取数据，然后阅读Python写入文件。

Answer 3

这样做怎么样？

"""
"""
#in this file "C:/Users/rshuell001/Desktop/symbols/amex.txt"
#you have the following tickers
#ibm
#sbux
#msft
"""

import urllib
import re
import json

symbolslist = open("C:/Users/rshuell001/Desktop/symbols/amex.txt").read()
symbolslist = symbolslist.split("\n")

for symbol in symbolslist:
    myfile = open("C:/Users/rshuell001/Desktop/symbols/" +symbol +".txt", "w+")
    myfile.close()

    htmltext = urllib.urlopen("http://www.bloomberg.com/markets/chart/data/1D/"+ symbol+ ":US")
    data = json.load(htmltext)
    datapoints = data["data_values"]

    myfile = open("C:/Users/rshuell001/Desktop/symbols/" +symbol +".txt", "a")
    for point in datapoints:
        myfile.write(str(symbol+","+str(point[0])+","+str(point[1])+"\n"))
    myfile.close()

这是一个类似但不同的选项（您正在读取元组而不是文本文件）。

import urllib2

listOfStocks = ["AAPL", "MSFT", "GOOG", "FB", "AMZN"]

urls = []

for company in listOfStocks:
    urls.append('http://real-chart.finance.yahoo.com/table.csv?s=' + company + '&d=6&e=28&f=2015&g=m&a=11&b=12&c=1980&ignore=.csv')

Output_File = open('C:/Users/rshuell001/Historical_Prices.csv','w')

New_Format_Data = ''

for counter in range(0, len(urls)):

    Original_Data = urllib2.urlopen(urls[counter]).read()

    if counter == 0:
        New_Format_Data = "Company," + urllib2.urlopen(urls[counter]).readline()

    rows = Original_Data.splitlines(1)

    for row in range(1, len(rows)):

        New_Format_Data = New_Format_Data + listOfStocks[counter] + ',' + rows[row]

Output_File.write(New_Format_Data)
Output_File.close()

根据来自ticker_list的输入从URL下载CSV文件？

3 个答案: