pip install --upgrade pip 不是升级 pip

Question

I'm trying to upgrade pip on Centos 7 . I pip 8.1.2 from /usr/lib/python2.7/site-packages (python 2.7) installed.

When I run pip install --upgrade pip --user I get the following output:

Collecting pip
  Using cached https://files.pythonhosted.org/packages/00/b6/9cfa56b4081ad13874b0c6f96af8ce16cfbc1cb06bedf8e9164ce5551ec1/pip-19.3.1-py2.py3-none-any.whl
Installing collected packages: pip
Successfully installed pip-8.1.2
You are using pip version 8.1.2, however version 19.3.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

What I've tried

I've tried the following, which have all resulted in the same output and result as above:

• pip install --upgrade pip --user
• pip install -U pip --user --ignore-installed
• pip install -U pip --user --ignore-installed --no-cache-dir
• sudo yum update pip which returns

No Match for argument: pip
No package pip available.
No packages marked for update

• sudo yum update python-pip which returns No packages marked for update

Observations

python -m pip --version outputs:

pip 19.3.1 from /home/deploy/.local/lib/python2.7/site-packages/pip (python 2.7)

pip --version outputs:

pip 8.1.2 from /usr/lib/python2.7/site-packages (python 2.7)

Answer 1

You need to update your PATH to include /home/deploy/.local/lib/python2.7/bin before /usr/lib/python2.7/bin if you want pip to resolve to the same location as python . Otherwise, python -m pip is the more proper usage pattern

Otherwise, you're looking at two completely separate python installations and pip is indeed upgraded in one of them

Note: Python2 is end of life, so probably best to remove the one in your home folder, anyway, and switch to using something like Pipenv or pyenv