详细报错内容：

Traceback (most recent call last):
File "/usr/local/python3/lib/python3.7/site-packages/ddt.py", line 192, in wrapper
return func(self, *args, **kwargs)
File "/usr/hxy/auto-test/interface/test_start.py", line 49, in test
result = RequestsHandle().httpRequest(method, reparam.uri, data=reparam.data, headers=reparam.headers)
File "/usr/hxy/auto-test/common/request_handle.py", line 32, in httpRequest
headers=headers, verify=False, proxies=proxies)
File "/usr/local/python3/lib/python3.7/site-packages/requests/sessions.py", line 542, in request
resp = self.send(prep, **send_kwargs)
File "/usr/local/python3/lib/python3.7/site-packages/requests/sessions.py", line 655, in send
r = adapter.send(request, **kwargs)
File "/usr/local/python3/lib/python3.7/site-packages/requests/adapters.py", line 516, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='sync-test.helianhealth.com', port=443): Max retries exceeded with url: /sync-channel/channel/admin/hsp/template/isOnline (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7fd369b643c8>: Failed to establish a new connection: [Errno -2] Name or service not known'))

在我本地是不会出现该报错，部署在linux服务器运行项目就会出现该错误。

因为除了我在运用该台服务器还有别的技术人员在使用，requests版本落后导致的。

解决方法：更新requests 命令： pip install -U requests

如果出现下面报错：

ERROR: Cannot uninstall 'requests'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

使用distutils安装了某个包，你需要通过distutils来卸载这个包。不幸的是distutils不包含卸载命令，所以 "uninstall using distutils"就意味着你要手动移除这个包。

cd /usr/lib/python2.7/site-packages/
mkdir /opt/pylib_backup/
mv requests* /opt/pylib_backup/

pip list 看到 requests包被卸载了

[root@bareos_server site-packages]# pip list |grep request
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
[root@bareos_server site-packages]#