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用python写代码抓取外汇汇率和提示USDCNY不超过6.7的最优价格买入？


def get_money():
 
    import re
    import json
    import urllib.request
 
    url = "http://webforex.hermes.hexun.com/forex/quotelist?code=FOREXUSDCNY&column=Code,Price"
 
    headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0'}
    req = urllib.request.Request(url=url, headers=headers)
    f=urllib.request.urlopen(req).read()
 
    html = f
    s = re.findall("{.*}",str(html))[0]
    sjson = json.loads(s)
    USDCNY = float(sjson["Data"][0][0][1]/10000)
    return USDCNY
a=get_money()
if a<=6.7:
    print('当前可以'+str(a)+'的价格买入')

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