python：3.6.9 ubuntu：16.04.5
新拿到远程服务器，配置环境需要用到pipenv，在 pip install pipenv的时候，出现了以下错误：
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/pipenv/ ... ... Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)) - skipping系统缺少python的_ssl依赖包，在输入编译命令make test 后，发现有报错：
No module named ： '_ssl'、'_tkinter'、'_lzma'等启动python，导入ssl模块发现也报错
$ python Python 3.6.9 (default, Oct 21 2020, 08:00:24) [GCC 5.4.0 20160609] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import ssl Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python3.6/ssl.py", line 101, in <module> import _ssl # if we can't import it, let the error propagate ModuleNotFoundError: No module named '_ssl'安装openssl，等python依赖包
sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev按照以下命令依次执行
./configure sudo make sudo make install pip3 install package_name相关链接：https://stackoverflow.com/questions/41328451/ssl-module-in-python-is-not-available-when-installing-package-with-pip3
