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.

Backend: ``

---

dependencies

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

str | None

default: None

A human-readable description of the target. Use ./pants list --documented :: to see all targets with descriptions.

interpreter_constraints

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 https://www.pantsbuild.org/docs/python-interpreter-compatibility.

sources

Iterable[str] | None

default: ('*.py', '*.pyi', '!test_*.py', '!*_test.py', '!tests.py', '!conftest.py', '!test_*.pyi', '!*_test.pyi', '!tests.pyi')

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

Iterable[str] | None

default: None

Arbitrary strings that you can use to describe a target. For example, you may tag some test targets with 'integration_test' so that you could run ./pants --tags='integration_test' test :: to only run on targets with that tag.