urllib.request.urlopen（URL）在python3中不起作用

我正在尝试使用urllib.request.urlopen访问JSON。在python2中使用urllib2时效果很好，但不使用urllib.request.urlopen

URL = 'https://api.exchangeratesapi.io/latest'

f = urllib.request.urlopen(URL)

在处理上述异常期间，发生了另一个异常：

Traceback (most recent call last):
  File "a1.py", line 19, in <module>
    print(getLatestRates())
  File "a1.py", line 15, in getLatestRates
    f = urllib.request.urlopen(URL)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 525, in open
    response = self._open(req, data)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 543, in _open
    '_open', req)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 503, in _call_chain
    result = func(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 1359, in https_open
    context=self._context, check_hostname=self._check_hostname)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/urllib/request.py", line 1318, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:864)>

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您可以尝试禁用ssl验证

import urllib3
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) 

---

这就是我所用的，它起作用了：

from urllib.request import urlopen

URL = 'https://api.exchangeratesapi.io/latest'
f = urlopen(URL)

---

我希望这对你有用

在我的例子中，request.py中有一个错误问题：

_加载\u windows\u存储\u证书导致内存错误

通过将python从3.7.4版更新到3.8.1版进行修复

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希望获得此帮助

您是在防火墙后面还是使用带有捕获屏幕的公共wifi？您是在windows还是mac上？您是否安装了Python3.7的根证书？也许你应该读一读：这可能是问题所在。

from urllib.request import urlopen

URL = 'https://api.exchangeratesapi.io/latest'
f = urlopen(URL)