Pretty-print a dependency tree for a Python distribution. A simple example:
$ johnnydep requests
name summary
────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
requests Python HTTP for Humans.
├── certifi>=2023.5.7 Python package for providing Mozilla's CA Bundle.
├── charset_normalizer<4,>=2 The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet.
├── idna<4,>=2.5 Internationalized Domain Names in Applications (IDNA)
└── urllib3<3,>=1.26 HTTP library with thread-safe connection pooling, file post, and more.
A more complex tree:
$ johnnydep boto3
name summary
──────────────────────────────────────────────────────────────────────────────────────────────────────────────────
boto3 The AWS SDK for Python
├── botocore<1.44.0,>=1.43.12 Low-level, data-driven core of boto 3.
│ ├── jmespath<2.0.0,>=0.7.1 JSON Matching Expressions
│ ├── python-dateutil<3.0.0,>=2.1 Extensions to the standard Python datetime module
│ │ └── six>=1.5 Python 2 and 3 compatibility utilities
│ └── urllib3!=2.2.0,<3,>=1.25.4 HTTP library with thread-safe connection pooling, file post, and more.
├── jmespath<2.0.0,>=0.7.1 JSON Matching Expressions
└── s3transfer<0.18.0,>=0.17.0 An Amazon S3 Transfer Manager
└── botocore<2.0a.0,>=1.37.4 Low-level, data-driven core of boto 3.
├── jmespath<2.0.0,>=0.7.1 JSON Matching Expressions
├── python-dateutil<3.0.0,>=2.1 Extensions to the standard Python datetime module
│ └── six>=1.5 Python 2 and 3 compatibility utilities
└── urllib3!=2.2.0,<3,>=1.25.4 HTTP library with thread-safe connection pooling, file post, and more.
Johnnydep can also attempt to resolve the dependency tree:
$ johnnydep ipython --output-format pinned
ipython==9.13.0
decorator==5.3.1
ipython_pygments_lexers==1.1.1
jedi==0.20.0
matplotlib-inline==0.2.2
pexpect==4.9.0
prompt_toolkit==3.0.52
psutil==7.2.2
Pygments==2.20.0
stack-data==0.6.3
traitlets==5.15.0
parso==0.8.7
ptyprocess==0.7.0
wcwidth==0.7.0
asttokens==3.0.1
executing==2.2.1
pure_eval==0.2.3
Note that pip install lacked a working solver for many years, but pip v20.3 has a new solver (December 2020) which has really improved matters!
Check johnnydep --help for other features and options.