场景

刚配置的linux系统，安装完python3.7.9后使用requests模块，抛出异常：

Traceback (most recent call last):
  File "/usr/local/python3/lib/python3.7/site-packages/urllib3/connectionpool.py", line 659, in urlopen
    conn = self._get_conn(timeout=pool_timeout)
  File "/usr/local/python3/lib/python3.7/site-packages/urllib3/connectionpool.py", line 279, in _get_conn
    return conn or self._new_conn()
  File "/usr/local/python3/lib/python3.7/site-packages/urllib3/connectionpool.py", line 948, in _new_conn
    "Can't connect to HTTPS URL because the SSL module is not available."
urllib3.exceptions.SSLError: Can't connect to HTTPS URL because the SSL module is not available.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/python3/lib/python3.7/site-packages/requests/adapters.py", line 449, in send
    timeout=timeout
  File "/usr/local/python3/lib/python3.7/site-packages/urllib3/connectionpool.py", line 727, in urlopen
    method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
  File "/usr/local/python3/lib/python3.7/site-packages/urllib3/util/retry.py", line 446, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='ipservice.3g.163.com', port=443): Max retries exceeded with url: /ip (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available."))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "test.py", line 6, in <module>
    rep = requests.get(url, verify=False)
  File "/usr/local/python3/lib/python3.7/site-packages/requests/api.py", line 76, in get
    return request('get', url, params=params, **kwargs)
  File "/usr/local/python3/lib/python3.7/site-packages/requests/api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/local/python3/lib/python3.7/site-packages/requests/sessions.py", line 530, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/python3/lib/python3.7/site-packages/requests/sessions.py", line 643, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/python3/lib/python3.7/site-packages/requests/adapters.py", line 514, in send
    raise SSLError(e, request=request)
requests.exceptions.SSLError: HTTPSConnectionPool(host='ipservice.3g.163.com', port=443): Max retries exceeded with url: /ip (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available."))

尝试方案

1. 更新spacy(地址：https://blog.csdn.net/zcyzhangzhou/article/details/86572845)：失败
2. 更新openssl(地址：http://www.45fan.com/article.php?aid=19073158040128417480594681)：失败
3. 安装requests的依赖包(地址：https://www.cnblogs.com/hum0ro/p/9536033.html)：失败

解决方案

因为python安装的时候可能没有安装openssl相关的开发包，因此需要手动安装：
yum install openssl-devel
安装好后重新编译一遍python或者删除重装

参考

https://docsxyz.com/wiki/python/ssl-module-is-not-available