python爬虫实例，股票数据定向爬虫

前言

我服了，这几天，怎么涨两天还不够跌一次，害。希望这个可以帮到自己！

“股票数据定向爬虫”实例介绍

功能描述

目标：获取上交所和深交所所有股票的名称和交易信息
输出：保存到文件中
技术路线：requests‐bs4‐re

候选数据网站的选择

新浪股票：http://finance.sina.com.cn/stock/
百度股票：https://gupiao.baidu.com/stock/

• 选取原则：股票信息静态存在于HTML页面中，非js代码生成；没有Robots协议限制
• 选取方法：浏览器 F12，源代码查看等
• 选取心态：不要纠结于某个网站，多找信息源尝试
  请查看视频理解网站的选取过程

数据网站的确定

获取股票列表：
东方财富网：http://quote.eastmoney.com/stocklist.html
获取个股信息：
百度股票：https://gupiao.baidu.com/stock/
单个股票https://gupiao.baidu.com/stock/sz002439.html

程序的结构设计

步骤1：从东方财富网获取股票列表
步骤2：根据股票列表逐个到百度股票获取个股信息
步骤3：将结果存储到文件

“股票数据定向爬虫”实例编写

main（）

import requests from bs4 import BeautifulSoup import traceback import re def getHTMLText(url): return "" def getStockList(lst, stockURL): return "" def getStockInfo(lst, stockURL, fpath): return "" def main(): stock_list_url = 'http://quote.eastmoney.com/stocklist.html' stock_info_url = 'http://gupiao.baidu.com/stock/' output_file = 'D:/BaiduStockInfo.txt' slist=[] getStockList(slist, stock_list_url) getStockInfo(slist, stock_info_url, output_file) main() 

def getHTMLText(url): try: r = requests.get(url) r.raise_for_status() r.encoding = r.apparent_encoding return r.text except: return "" 

东方财富网：http://quote.eastmoney.com/stocklist.html

def getStockList(lst, stockURL): html = getHTMLText(stockURL) soup = BeautifulSoup(html, 'html.parser') a = soup.find_all('a') for i in a: try: href = i.attrs['href'] lst.append(re.findall(r"[s][hz]\d{6}", href)[0]) except: continue 

百度股票：https://gupiao.baidu.com/stock/

def getStockInfo(lst, stockURL, fpath): for stock in lst: url = stockURL + stock + ".html" html = getHTMLText(url) try: if html=="": continue infoDict = {} soup = BeautifulSoup(html, 'html.parser') stockInfo = soup.find('div',attrs={'class':'stock-bets'}) name = stockInfo.find_all(attrs={'class':'bets-name'})[0] infoDict.update({'股票名称': name.text.split()[0]}) keyList = stockInfo.find_all('dt') valueList = stockInfo.find_all('dd') for i in range(len(keyList)): key = keyList[i].text
                val = valueList[i].text
                infoDict[key] = val with open(fpath, 'a', encoding='utf-8') as f: f.write( str(infoDict) + '\n' ) except: traceback.print_exc() continue 

全代码见文末附录

“股票数据定向爬虫”实例优化

如何提高用户体验？

单元小结

附录（本节代码）

#CrawBaiduStocksA.py import requests from bs4 import BeautifulSoup import traceback import re def getHTMLText(url): try: r = requests.get(url) r.raise_for_status() r.encoding = r.apparent_encoding return r.text except: return "" def getStockList(lst, stockURL): html = getHTMLText(stockURL) soup = BeautifulSoup(html, 'html.parser') a = soup.find_all('a') for i in a: try: href = i.attrs['href'] lst.append(re.findall(r"[s][hz]\d{6}", href)[0]) except: continue def getStockInfo(lst, stockURL, fpath): for stock in lst: url = stockURL + stock + ".html" html = getHTMLText(url) try: if html=="": continue infoDict = {} soup = BeautifulSoup(html, 'html.parser') stockInfo = soup.find('div',attrs={'class':'stock-bets'}) name = stockInfo.find_all(attrs={'class':'bets-name'})[0] infoDict.update({'股票名称': name.text.split()[0]}) keyList = stockInfo.find_all('dt') valueList = stockInfo.find_all('dd') for i in range(len(keyList)): key = keyList[i].text
                val = valueList[i].text
                infoDict[key] = val with open(fpath, 'a', encoding='utf-8') as f: f.write( str(infoDict) + '\n' ) except: traceback.print_exc() continue def main(): stock_list_url = 'http://quote.eastmoney.com/stocklist.html' stock_info_url = 'http://gupiao.baidu.com/stock/' output_file = 'D:/BaiduStockInfo.txt' slist=[] getStockList(slist, stock_list_url) getStockInfo(slist, stock_info_url, output_file) main() 

#CrawBaiduStocksB.py import requests from bs4 import BeautifulSoup import traceback import re def getHTMLText(url, code="utf-8"): try: r = requests.get(url) r.raise_for_status() r.encoding = code return r.text except: return "" def getStockList(lst, stockURL): html = getHTMLText(stockURL, "GB2312") soup = BeautifulSoup(html, 'html.parser') a = soup.find_all('a') for i in a: try: href = i.attrs['href'] lst.append(re.findall(r"[s][hz]\d{6}", href)[0]) except: continue def getStockInfo(lst, stockURL, fpath): count = 0 for stock in lst: url = stockURL + stock + ".html" html = getHTMLText(url) try: if html=="": continue infoDict = {} soup = BeautifulSoup(html, 'html.parser') stockInfo = soup.find('div',attrs={'class':'stock-bets'}) name = stockInfo.find_all(attrs={'class':'bets-name'})[0] infoDict.update({'股票名称': name.text.split()[0]}) keyList = stockInfo.find_all('dt') valueList = stockInfo.find_all('dd') for i in range(len(keyList)): key = keyList[i].text
                val = valueList[i].text
                infoDict[key] = val with open(fpath, 'a', encoding='utf-8') as f: f.write( str(infoDict) + '\n' ) count = count + 1 print("\r当前进度: {:.2f}%".format(count*100/len(lst)),end="") except: count = count + 1 print("\r当前进度: {:.2f}%".format(count*100/len(lst)),end="") continue def main(): stock_list_url = 'http://quote.eastmoney.com/stocklist.html' stock_info_url = 'http://gupiao.baidu.com/stock/' output_file = 'D:/BaiduStockInfo.txt' slist=[] getStockList(slist, stock_list_url) getStockInfo(slist, stock_info_url, output_file) main() 

本文地址：https://blog.csdn.net/haojie_duan/article/details/108228168