https://pip.pypa.io/en/stable/installing/

Installation

Do I need to install pip?

pip is already installed if you are using Python 2 >=2.7.9 or Python 3 >=3.4 downloaded from  or if you are working in a  created by  or . Just make sure to .

Installing with get-pip.py

To install pip, securely download . :

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py

Inspect get-pip.py for any malevolence. Then run the following:

　到这一步的时候，如果python2的pip坏了，就运行：python2 get-pip.py

　如果是python3的pip坏了，升级就运行：python3 get-pip.py

python get-pip.py

Warning

 

Be cautious if you are using a Python install that is managed by your operating system or another package manager. get-pip.py does not coordinate with those tools, and may leave your system in an inconsistent state.

get-pip.py also installs   and  if they are not already.  is required to install . Both are required in order to build a  (which improves installation speed), although neither are required to install pre-built .

Note

 

The get-pip.py script is supported on the same python version as pip. For the now unsupported Python 2.6, alternate script is available .

get-pip.py options

--no-setuptools

If set, do not attempt to install 

--no-wheel

If set, do not attempt to install 

get-pip.py allows  and the . Below are some examples:

Install from local copies of pip and setuptools:

python get-pip.py --no-index --find-links=/local/copies

Install to the user site :

python get-pip.py --user

Install behind a proxy:

python get-pip.py --proxy="http://[user:passwd@]proxy.server:port"

Using Linux Package Managers

See  in the .

Upgrading pip

On Linux or macOS:

pip install -U pip

On Windows :

python -m pip install -U pip

Python and OS Compatibility

pip works with CPython versions 2.7, 3.3, 3.4, 3.5, 3.6 and also pypy.

This means pip works on the latest patch version of each of these minor versions. Previous patch versions are supported on a best effort approach.

pip works on Unix/Linux, macOS, and Windows.

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"Secure" in this context means using a modern browser or a tool like curl that verifies SSL certificates when downloading from https URLs.

Beginning with pip v1.5.1, get-pip.py stopped requiring setuptools to be installed first.

The pip developers are considering making --user the default for all installs, including get-pip.py installs of pip, but at this time, --user installs for pip itself, should not be considered to be fully tested or endorsed. For discussion, see .