小编Sou*_*ple的帖子

我正在尝试更新pip使用pip install --upgrade pip,但我同时收到"需求满足"错误和"过时版本"消息

$ pip install --upgrade pip
Requirement already up-to-date: pip in 
/Users/user/Envs/proj/lib/python2.7/site-packages
You are using pip version 9.0.1, however version 9.0.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' 
command.

我该如何更新？

在Python 3.6我得到一个ModuleNotFoundError：

>>> import OpenSSL
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'OpenSSL'

Python为什么找不到OpenSSL模块？