Question

这是网页：https://www.huobi.com/p/api/contents/

我正在尝试创建一个python代码，告诉我标题是否有任何更改。我正在使用此代码，我收到此错误

Traceback (most recent call last):
  File "C:\Users\Admin\Desktop\folder\python.py", line 24, in <module>
    before_set = set(before['title'])
KeyError: 'title'

这是我尝试使用的代码

import requests
import json
import smtplib
import time

def build_pair_string(pairs):
    pair_string = ""
    for pair in pairs:
        pair_string += pair + "\n"

    return pair_string

try:
    with open('marketstrex.json', 'r') as current_markets:
        before = json.loads(current_markets.read())
except IOError:
    before = requests.get('https://www.huobi.com/p/api/contents/').json()
    with open('marketstrex.json', 'w') as current_markets:
        current_markets.write(json.dumps(before))
    print("First run... Getting initial market data.")

after = requests.get('https://www.huobi.com/p/api/contents/').json()

before_set = set(before['title'])
after_set = set(after['title'])

new_set = after_set - before_set

if not new_set:
    print("No change... Exiting.")
    time.sleep(5)
if new_set:
    with open('marketstrex.json', 'w') as current_markets:
        current_markets.write(json.dumps(after))
    print('Huobi changes:')
    new_list = []
    for pair in new_set:
        new_list.append(pair)  # = [item for item in pair]
    print(new_list)

    sender = 'example@example.com'
    receivers = ['example@example.com']

    message = """
Huobi changes:\n{}\n

    """.format(build_pair_string(new_list))

    try:
        smtpObj = smtplib.SMTP_SSL('smtp.gmail.com:465')
        smtpObj.login('example@example.com','password')
        smtpObj.sendmail(sender, receivers, message)         
        print("\nSuccessfully sent email")
    except SMTPException:
       print("\nError: unable to send email")

它可以告诉我网页是否有任何变化，但显然，它没有做任何事情/无法判断是否有变化

请指教！

Answer 1

获取数据表明顶级JSON结构中没有title。有一个data元素是一个包含title元素的字典。也许这就是你要提取的内容？

data元素还包含一个成员top_notice_list，该成员是一个元素列表，每个元素都有一个title元素。

试图查看网页是否有任何差异

1 个答案: