python_library

Python source code.

A python_library does not necessarily correspond to a distribution you publish (see python_distribution and pex_binary for that); multiple python_library targets may be packaged into a distribution or binary.

dependencies

type: Iterable[str] | None
default: None

Addresses to other targets that this target depends on, e.g. ['helloworld/subdir:lib'].

Alternatively, you may include file names. Pants will find which target owns that file, and create a new target from that which only includes the file in its sources field. For files relative to the current BUILD file, prefix with ./; otherwise, put the full path, e.g. ['./sibling.txt', 'resources/demo.json'].

You may exclude dependencies by prefixing with !, e.g. ['!helloworld/subdir:lib', '!./sibling.txt']. Ignores are intended for false positives with dependency inference; otherwise, simply leave off the dependency from the BUILD file.

description

type: str | None
default: None

A human-readable description of the target.

Use ./pants list --documented :: to see all targets with descriptions.

interpreter_constraints

type: Iterable[str] | None
default: None

The Python interpreters this code is compatible with.

Each element should be written in pip-style format, e.g. CPython==2.7.* or CPython>=3.6,<4. You can leave off CPython as a shorthand, e.g. >=2.7 will be expanded to CPython>=2.7.

Specify more than one element to OR the constraints, e.g. ['PyPy==3.7.*', 'CPython==3.7.*'] means either PyPy 3.7 or CPython 3.7.

If the field is not set, it will default to the option [python-setup].interpreter_constraints.

See Interpreter compatibility for how these interpreter constraints are merged with the constraints of dependencies.

skip_bandit

type: bool
default: False

If true, don't run Bandit on this target's code.

skip_black

type: bool
default: False

If true, don't run Black on this target's code.

skip_docformatter

type: bool
default: False

If true, don't run Docformatter on this target's code.

skip_flake8

type: bool
default: False

If true, don't run Flake8 on this target's code.

skip_isort

type: bool
default: False

If true, don't run isort on this target's code.

skip_mypy

type: bool
default: False

If true, don't run MyPy on this target's code.

skip_pylint

type: bool
default: False

If true, don't run Pylint on this target's code.

skip_yapf

type: bool
default: False

If true, don't run yapf on this target's code.

sources

type: Iterable[str] | None
default: ('

A list of files and globs that belong to this target.

Paths are relative to the BUILD file's directory. You can ignore files/globs by prefixing them with !.

Example: sources=['example.py', 'test_*.py', '!test_ignore.py'].

tags

type: Iterable[str] | None
default: None

Arbitrary strings to describe a target.

For example, you may tag some test targets with 'integration_test' so that you could run ./pants --tag='integration_test' test :: to only run on targets with that tag.


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