Python 有没有办法显示pip包的依赖树？
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Is there any way to show the dependency trees for pip packages?
提问by tbicr
I have a project with multiple package dependencies, the main requirements being listed in requirements.txt. When I call pip freezeit prints the currently installed packages as plain list. I would prefer to also get their dependency relationships, something like this:
我有一个具有多个包依赖项的项目，主要要求列在requirements.txt. 当我调用pip freeze它时，它会将当前安装的软件包打印为普通列表。我更希望获得他们的依赖关系，如下所示：
Flask==0.9
Jinja2==2.7
Werkzeug==0.8.3
Jinja2==2.7
Werkzeug==0.8.3
Flask-Admin==1.0.6
Flask==0.9
Jinja2==2.7
Werkzeug==0.8.3
The goal is to detect the dependencies of each specific package:
目标是检测每个特定包的依赖关系：
Werkzeug==0.8.3
Flask==0.9
Flask-Admin==1.0.6
And insert these into my current requirements.txt. For example, for this input:
并将这些插入到我当前的requirements.txt. 例如，对于这个输入：
Flask==0.9
Flask-Admin==1.0.6
Werkzeug==0.8.3
I would like to get:
我想得到：
Flask==0.9
Jinja2==2.7
Flask-Admin==1.0.6
Werkzeug==0.8.3
Is there any way show the dependencies of installed pip packages?
有没有办法显示已安装的pip包的依赖关系？
采纳答案by Anthon
You should take a look at pipdeptree:
你应该看看pipdeptree：
$ pip install pipdeptree
$ pipdeptree -fl
Warning!!! Cyclic dependencies found:
------------------------------------------------------------------------
xlwt==0.7.5
ruamel.ext.rtf==0.1.1
xlrd==0.9.3
openpyxl==2.0.4
- jdcal==1.0
pymongo==2.7.1
reportlab==3.1.8
- Pillow==2.5.1
- pip
- setuptools
It doesn't generate a requirements.txtfile as you indicated directly. However the source (255 lines of python code) should be relatively easy to modify to your needs, or alternatively you can (as @MERose indicated is in the pipdeptree 0.3 README ) out use:
它不会requirements.txt像您直接指出的那样生成文件。但是，源代码（255 行 python 代码）应该相对容易根据您的需要进行修改，或者您也可以（如@MERose 在 pipdeptree 0.3 README 中指出的那样）使用：
pipdeptree --freeze --warn silence | grep -P '^[\w0-9\-=.]+' > requirements.txt
The 0.5 version of pipdeptreealso allows JSON output with the --jsonoption, that is more easily machine parseble, at the expense of being less readable.
0.5 版本pipdeptree还允许带有--json选项的JSON 输出，这更容易机器解析，但代价是可读性较低。
回答by ali_m
Warning: py2 only / abandonware
警告：仅限 py2/废弃软件
yolkcan display dependencies for packages, provided that they
yolk可以显示包的依赖关系，前提是它们
- were installed via
setuptools came with metadata that includes dependency information
$ yolk -d Theano Theano 0.6.0rc3 scipy>=0.7.2 numpy>=1.5.0
- 通过安装
setuptools 附带包含依赖信息的元数据
$ yolk -d Theano Theano 0.6.0rc3 scipy>=0.7.2 numpy>=1.5.0
