爬取网页的通用代码框架

import requests

def getHTMLText(url):
try:
r = requests.get(url,timeout=30)
r.raise_for_status()
r.encoding = r.apparent_encoding
return r.text
except:
return"产生异常"

以下是接口调试：

Python 3.8.1 (tags/v3.8.1:1b293b6, Dec 18 2019, 22:39:24) [MSC v.1916 32 bit (Intel)] on win32
Type “help”, “copyright”, “credits” or “license” for more information.

import requests
import json
url = ‘https://lab.isaaclin.cn/nCoV/zh/nCoV/api/overall’
r = requests.get(url)
result = json.loads(r.text)
Traceback (most recent call last):
File “”, line 1, in
File “C:\Users\于冶杭\AppData\Local\Programs\Python\Python38-32\lib\json_init_.py”, line 357, in loads
return _default_decoder.decode(s)
File “C:\Users\于冶杭\AppData\Local\Programs\Python\Python38-32\lib\json\decoder.py”, line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File “C:\Users\于冶杭\AppData\Local\Programs\Python\Python38-32\lib\json\decoder.py”, line 355, in raw_decode
raise JSONDecodeError(“Expecting value”, s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

print(result)
Traceback (most recent call last):
File “”, line 1, in
NameError: name ‘result’ is not defined