有没有办法列出 pip 依赖项/要求？

Question

在不进行安装的情况下，我想快速查看pip install 将安装的所有包。

Answer 1

接受的答案不再与最新版本的 pip 相关，并且在不仔细阅读多个 cmets 的情况下不会立即给出答案，因此我提供了更新的答案。

这是用 pip 版本 8.1.2、9.0.1、10.0.1 和 18.1 测试的>.

要在不弄乱 Linux 上的当前目录的情况下获取输出，请使用

pip download [package] -d /tmp --no-binary :all: -v

-d 告诉 pip 下载文件的目录。

更好的是，只需使用此脚本，参数为包名即可仅获取依赖项作为输出：

#!/bin/sh

PACKAGE=$1
pip download $PACKAGE -d /tmp --no-binary :all:-v 2>&1 \
| grep Collecting \
| cut -d' ' -f2 \
| grep -Ev "$PACKAGE(~|=|\!|>|<|$)"

也可以使用here。

Answer 2

查看我的项目johnnydep！

安装：

pip install johnnydep

使用示例：

$ johnnydep requests
name                       summary
-------------------------  ----------------------------------------------------------------------
requests                   Python HTTP for Humans.
├── certifi>=2017.4.17     Python package for providing Mozilla's CA Bundle.
├── chardet<3.1.0,>=3.0.2  Universal encoding detector for Python 2 and 3
├── idna<2.7,>=2.5         Internationalized Domain Names in Applications (IDNA)
└── urllib3<1.23,>=1.21.1  HTTP library with thread-safe connection pooling, file post, and more.

更复杂的树：

$ johnnydep ipython 
name                              summary
--------------------------------  -----------------------------------------------------------------------------
ipython                           IPython: Productive Interactive Computing
├── appnope                       Disable App Nap on OS X 10.9
├── decorator                     Better living through Python with decorators
├── jedi>=0.10                    An autocompletion tool for Python that can be used for text editors.
│   └── parso==0.1.1              A Python Parser
├── pexpect                       Pexpect allows easy control of interactive console applications.
│   └── ptyprocess>=0.5           Run a subprocess in a pseudo terminal
├── pickleshare                   Tiny 'shelve'-like database with concurrency support
├── prompt-toolkit<2.0.0,>=1.0.4  Library for building powerful interactive command lines in Python
│   ├── six>=1.9.0                Python 2 and 3 compatibility utilities
│   └── wcwidth                   Measures number of Terminal column cells of wide-character codes
├── pygments                      Pygments is a syntax highlighting package written in Python.
├── setuptools>=18.5              Easily download, build, install, upgrade, and uninstall Python packages
├── simplegeneric>0.8             Simple generic functions (similar to Python's own len(), pickle.dump(), etc.)
└── traitlets>=4.2                Traitlets Python config system
    ├── decorator                 Better living through Python with decorators
    ├── ipython-genutils          Vestigial utilities from IPython
    └── six                       Python 2 and 3 compatibility utilities

Answer 3

当且仅当安装包时，您可以使用pip show <package>。查找输出末尾的Requires:。显然，这违反了您的要求，但仍然可能有用。

例如：

$ pip --version
pip 7.1.0 [...]
$ pip show pytest
---
Metadata-Version: 2.0
Name: pytest
Version: 2.7.2
Summary: pytest: simple powerful testing with Python
Home-page: http://pytest.org
Author: Holger Krekel, Benjamin Peterson, Ronny Pfannschmidt, Floris Bruynooghe and others
Author-email: holger at merlinux.eu
License: MIT license
Location: /home/usr/.tox/develop/lib/python2.7/site-packages
Requires: py

Answer 4

注意：此答案中使用的功能是deprecated in 2014 和removed in 2015。请查看适用于现代pip 的其他答案。

您可以直接使用 pip 最接近的是使用 --no-install 参数：

pip install --no-install <package>

例如，这是安装 celery 时的输出：

Downloading/unpacking celery                                                                                   
  Downloading celery-2.5.5.tar.gz (945Kb): 945Kb downloaded
  Running setup.py egg_info for package celery

    no previously-included directories found matching 'tests/*.pyc'
    no previously-included directories found matching 'docs/*.pyc'
    no previously-included directories found matching 'contrib/*.pyc'
    no previously-included directories found matching 'celery/*.pyc'
    no previously-included directories found matching 'examples/*.pyc'
    no previously-included directories found matching 'bin/*.pyc'
    no previously-included directories found matching 'docs/.build'
    no previously-included directories found matching 'docs/graffles'
    no previously-included directories found matching '.tox/*'
Downloading/unpacking anyjson>=0.3.1 (from celery)
  Downloading anyjson-0.3.3.tar.gz
  Running setup.py egg_info for package anyjson

Downloading/unpacking kombu>=2.1.8,<2.2.0 (from celery)
  Downloading kombu-2.1.8.tar.gz (273Kb): 273Kb downloaded
  Running setup.py egg_info for package kombu

Downloading/unpacking python-dateutil>=1.5,<2.0 (from celery)
  Downloading python-dateutil-1.5.tar.gz (233Kb): 233Kb downloaded
  Running setup.py egg_info for package python-dateutil

Downloading/unpacking amqplib>=1.0 (from kombu>=2.1.8,<2.2.0->celery)
  Downloading amqplib-1.0.2.tgz (58Kb): 58Kb downloaded
  Running setup.py egg_info for package amqplib

Successfully downloaded celery anyjson kombu python-dateutil amqplib

诚然，这确实以临时文件的形式留下了一些麻烦，但它确实实现了目标。如果您使用 virtualenv（您应该这样做）执行此操作，那么清理就像删除 <virtualenv root>/build 目录一样简单。

Answer 5

我引用alternative solution from @onnovalkering：

PyPi 提供带有包元数据的 JSON 端点：

>>> import requests
>>> url = 'https://pypi.org/pypi/{}/json'
>>> json = requests.get(url.format('pandas')).json()
>>> json['info']['requires_dist']
['numpy (>=1.9.0)', 'pytz (>=2011k)', 'python-dateutil (>=2.5.0)']
>>> json['info']['requires_python']
'>=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*'

对于特定的包版本，添加一个额外的版本段到 网址：

https://pypi.org/pypi/pandas/0.22.0/json

另外，如果你使用 conda (as suggested by @ShpielMeister)，你可以使用：

conda info package==X.X.X

显示信息，包括特定版本的依赖项或：

conda info package

显示信息，包括该软件包所有受支持版本的依赖关系。

Answer 6

使用pipdeptree (pip install pipdeptree)。需要安装包。

$ pipdeptree -p pandas
pandas==1.2.2
  - numpy [required: >=1.16.5, installed: 1.19.5]
  - python-dateutil [required: >=2.7.3, installed: 2.8.1]
    - six [required: >=1.5, installed: 1.15.0]
  - pytz [required: >=2017.3, installed: 2021.1]

使用johnnydep (pip install johnnydep)。速度较慢，因为它会下载软件包的轮子。

$ johnnydep pandas
2021-06-09 11:01:21 [info     ] init johnnydist                [johnnydep.lib] dist=pandas parent=None
2021-06-09 11:01:22 [info     ] init johnnydist                [johnnydep.lib] dist=numpy>=1.16.5 parent=pandas
2021-06-09 11:01:22 [info     ] init johnnydist                [johnnydep.lib] dist=python-dateutil>=2.7.3 parent=pandas
2021-06-09 11:01:23 [info     ] init johnnydist                [johnnydep.lib] dist=pytz>=2017.3 parent=pandas
2021-06-09 11:01:23 [info     ] init johnnydist                [johnnydep.lib] dist=six>=1.5 parent=python-dateutil>=2.7.3
name                        summary
--------------------------  -----------------------------------------------------------------------
pandas                      Powerful data structures for data analysis, time series, and statistics
├── numpy>=1.16.5           NumPy is the fundamental package for array computing with Python.
├── python-dateutil>=2.7.3  Extensions to the standard Python datetime module
│   └── six>=1.5            Python 2 and 3 compatibility utilities
└── pytz>=2017.3            World timezone definitions, modern and historical

Answer 7

我认为这些答案已经过时，现在有更好的解决方案。原帖在这里：

• How can I get a list of packages pip command will install without DOWNLOADING or INSTALLING the packages?

要为setup.cfg 或setup.py 中install_requires 中列出的包生成requirements.txt，您需要安装pip-tools。

pip install pip-tools
pip-compile

要生成一个requirements.txt 文件，其中包含在extras_requires 下为tests 和dev 指定的包：

pip-compile --extra tests --extra devrequirements.txt file with packages listed under

此外，您还可以使用requirements.in 文件而不是setup.cfg 或setup.py 来列出您的要求。

pip-compile requirements.in

Answer 8

应该使用命令 pip install <package> --download <path>，正如 @radtek 在 cmets 中提到的那样，因为从 7.0.0 (2015-05-21) 开始，--no-install 是来自 pip 的 removed。这会将所需的依赖项下载到<path>。

Answer 9

另一种选择是使用类似于this one 的帮助脚本，它使用pip.req.parse_requirements API 来解析requirements.txt 文件并使用distutils.core.setup 替换来解析setup.py 文件。