利用Python爬取网易上证所有股票数据（代码

import urllib.request
import re

##def downback(a,b,c):
##    ''''
##    a:已经下载的数据块
##    b:数据块的大小
##    c:远程文件的大小
##   '''
##    per = 100.0 * a * b / c
##    if per > 100 :
##        per = 100
##    print('%.2f%%' % per)
stock_CodeUrl = 'http://quote.eastmoney.com/stocklist.html'


# 获取股票代码列表
def urlTolist(url):
    allCodeList = []
    html = urllib.request.urlopen(url).read()
    html = html.decode('gbk')
    s = r'<li><a target="_blank" href="http://quote.eastmoney.com/\S\S(.*?).html">'
    pat = re.compile(s)
    code = pat.findall(html)
    for item in code:
        if item[0] == '6' or item[0] == '3' or item[0] == '0':
            allCodeList.append(item)
    return allCodeList


allCodelist = urlTolist(stock_CodeUrl)
for code in allCodelist:
    print('正在获取%s股票数据...' % code)
    if code[0] == '6':
        url = 'http://quotes.money.163.com/service/chddata.html?code=0' + code + \
              '&end=20180413&fields=TCLOSE;HIGH;LOW;TOPEN;LCLOSE;CHG;PCHG;TURNOVER;VOTURNOVER;VATURNOVER;TCAP;MCAP'
    else:
        url = 'http://quotes.money.163.com/service/chddata.html?code=1' + code + \
              '&end=20180413&fields=TCLOSE;HIGH;LOW;TOPEN;LCLOSE;CHG;PCHG;TURNOVER;VOTURNOVER;VATURNOVER;TCAP;MCAP'
    urllib.request.urlretrieve(url, 'd:\\all_stock_data\\' + code + '.csv')  # 可以加一个参数dowmback显示下载进度