配景
pip是python的一个包管理工具。平时只是install，但是很少检察安装了哪些？以及某个包详细信息。本文重要介绍list列出所有的包，以及show检察某个详细信息。顺带介绍install。
命令
list
pip3 list
show
pip3 show pyserial
-v 显示详细信息
install 安装
好比安装pyserial：pip3 install pyserial
其他
关键信息
man手册
- PIP(1) PIP(1)
- NAME
- pip - A tool for installing and managing Python packages
- SYNOPSIS
- pip <command> [options]
- pip3 <command> [options]
- DESCRIPTION
- pip is a Python package installer, recommended for installing Python
- packages which are not available in the Debian archive. It can work
- with version control repositories (currently only Git, Mercurial, and
- Bazaar repositories), logs output extensively, and prevents partial
- installs by downloading all requirements before starting installation.
- On Debian, pip is the command to use when installing packages for
- Python 2, while pip3 is the command to use when installing packages for
- Python 3.
- COMMANDS
- The command comes before any options. The following commands are rec-
- ognized:
- help Show help for commands.
- install
- Install packages.
- uninstall
- Uninstall packages.
- freeze Output installed packages in requirements format.
- list List installed packages.
- show Show information about installed packages.
- search Search PyPI for packages.
- wheel Build wheels from your requirements.
- GENERAL OPTIONS
- This list is by no means complete, and it only describes options avail-
- able to all commands. Use pip <command> --help for more details on
- command specific options. A few command options are provided below.
- -h, --help
- Show more detailed command help.
- -v, --verbose
- Give more output. Option is additive, and can be used up to 3
- times.
- -V, --version
- Show version and exit.
- -q, --quiet
- Give less output.
- --log-file <path>
- Path to a verbose non-appending log, that only logs failures.
- This log is active by default at ~/.pip/pip.log.
- --log <path>
- Path to a verbose appending log. This log is inactive by
- default.
- --proxy <proxy>
- Specify a proxy in the form [user:passwd@]proxy.server:port.
- --timeout <sec>
- Set the socket timeout (default 15 seconds).
- --exists-action <action>
- Default action when a path already exists: (s)witch, (i)gnore,
- (w)ipe, (b)ackup.
- --cert <path>
- Path to alternate CA bundle.
- INSTALL OPTIONS
- pip install installs packages from:
- o PyPI (a.k.a. The Cheeseshop) and other indexes, using requirements
- specifiers.
- o VCS project urls.
- o Local project directories.
- o Local or remote source archives
- -e,--editable <path/url>
- Install a project in editable mode (i.e. setuptools "develop
- mode") from a local project path or a VCS url.
- -r,--requirement <file>
- Install from the given requirements file. This option can be
- used multiple times.
- -b,--build <dir>
- Directory to unpack packages into and build in. The default in
- a virtualenv is "<venv path>/build". The default for global
- installs is "<OS temp dir>/pip_build_<username>".
- -t,--target <dir>
- Install packages into <dir>.
- -d,--download <dir>
- Download packages into <dir> instead of installing them, regard-
- less of what's already installed.
- --download-cache <dir>
- Cache downloaded packages in <dir>.
- --src <dir>
- Directory to check out editable projects into. The default in a
- virtualenv is "<venv path>/src". The default for global
- installs is "<current dir>/src".
- -U, --upgrade
- Upgrade all packages to the newest available version. This
- process is recursive regardless of whether a dependency is
- already satisfied.
- --force-reinstall
- When upgrading, reinstall all packages even if they are already
- up-to-date.
- -I, --ignore-installed
- Ignore the installed packages (reinstalling instead).
- --no-deps
- Don't install package dependencies.
- --install-option <options>
- Extra arguments to be supplied to the setup.py install command
- (use like --install-option ="--install-scripts=/usr/local/bin").
- Use multiple --install-option options to pass multiple options
- to setup.py install. If you are using an option with a directory
- path, be sure to use absolute path.
- --global-option <options>
- Extra global options to be supplied to the setup.py call before
- the install command.
- --user Install using the user scheme.
- --egg Install packages as eggs, not 'flat', like pip normally does.
- This option is not about installing from eggs. (WARNING: Because
- this option overrides pip's normal install logic, requirements
- files may not behave as expected.)
- --root <dir>
- Install everything relative to this alternate root directory.
- --compile
- Compile py files to pyc.
- --no-compile
- Do not compile py files to pyc.
- --no-use-wheel
- Do not find and prefer wheel archives when searching indexes and
- find-links locations.
- --pre Include pre-release and development versions. By default, pip
- only finds stable versions.
- --no-clean
- Don't clean up build directories.
- Package Index Options:
- -i,--index-url <url>
- Base URL of Python Package Index (default
- https://pypi.python.org/simple/).
- --extra-index-url <url>
- Extra URLs of package indexes to use in addition to --index-url.
- --no-index
- Ignore package index (only looking at --find-links URLs
- instead).
- -f,--find-links <url>
- If a url or path to an html file, then parse for links to ar-
- chives. If a local path or file:// url that's a directory, then
- look for archives in the directory listing.
- --allow-external <package>
- Allow the installation of externally hosted files
- --allow-all-external
- Allow the installation of all externally hosted files
- --allow-unverified <package>
- Allow the installation of insecure and unverifiable files
- --process-dependency-links
- Enable the processing of dependency links.
- UNINSTALL OPTIONS
- pip is able to uninstall most installed packages. Known exceptions are:
- o Pure distutils packages installed with python setup.py install,
- which leave behind no metadata to determine what files were
- installed.
- o Script wrappers installed by python setup.py develop.
- -r,--requirement <file>
- Uninstall all the packages listed in the given requirements
- file. This option can be used multiple times.
- -y, --yes
- Don't ask for confirmation of uninstall deletions.
- AUTHORS
- This manual page was originally written by Jeff Licquia <-
- licquia@debian.org>, later rewritten by Carl Chenet <-
- chaica@debian.org>. It was rewritten again and the source converted to
- reStructuredText by Barry Warsaw <barry@debian.org>.
- Permission is granted to copy, distribute and/or modify this document
- under the terms of the GNU General Public License, version 3 or any
- later version published by the Free Software Foundation.
- AUTHOR
- Barry Warsaw <barry@debian.org>
- 1.5.6 2014-06-03 PIP(1)
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