Skip to main content
Version: 2.11 (deprecated)


Generate a python_source target for each file in the sources field.

You can either use this target generator or python_test_utils for test utility files like They behave identically, but can help to better model and keep separate test support files vs. production files.

Backend: pants.backend.python


Iterable[str] | None
default: None

Addresses to other targets that this target depends on, e.g. ['helloworld/subdir:lib', 'helloworld/', '3rdparty:reqs#django'].

This augments any dependencies inferred by Pants, such as by analyzing your imports. Use /home/josh/work/scie-pants/dist/pants dependencies or /home/josh/work/scie-pants/dist/pants peek on this target to get the final result.

See and for more about how addresses are formed, including for generated targets. You can also run /home/josh/work/scie-pants/dist/pants list :: to find all addresses in your project, or /home/josh/work/scie-pants/dist/pants list dir: to find all addresses defined in that directory.

If the target is in the same BUILD file, you can leave off the BUILD file path, e.g. :tgt instead of helloworld/subdir:tgt. For generated first-party addresses, use ./ for the file path, e.g. ./; for all other generated targets, use :tgt#generated_name.

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.


str | None
default: None

A human-readable description of the target.

Use /home/josh/work/scie-pants/dist/pants list --documented :: to see all targets with descriptions.


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].interpreter_constraints.

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


Dict[Union[str, Tuple[str, ...]], Dict[str, Any]] | None
default: None

Override the field values for generated python_source targets.

Expects a dictionary of relative file paths and globs to a dictionary for the overrides. You may either use a string for a single path / glob, or a string tuple for multiple paths / globs. Each override is a dictionary of field names to the overridden value.

For example:

"": {"skip_pylint": True]},
"": {"skip_flake8": True]},
("", ""): {"tags": ["linter_disabled"]},

File paths and globs are relative to the BUILD file's directory. Every overridden file is validated to belong to this target's sources field.

If you'd like to override a field's value for every python_source target generated by this target, change the field directly on this target rather than using the overrides field.

You can specify the same file name in multiple keys, so long as you don't override the same field more than one time for the file.


str | None
default: None

The resolve from [python].resolves to use.

If not defined, will default to [python].default_resolve.

All dependencies must share the same value for their resolve field.


default: False
backend: pants.backend.experimental.python.lint.autoflake

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


default: False
backend: pants.backend.python.lint.bandit

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


default: False

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


default: False
backend: pants.backend.python.lint.docformatter

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


default: False
backend: pants.backend.python.lint.flake8

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


default: False
backend: pants.backend.python.lint.isort

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


default: False
backend: pants.backend.python.typecheck.mypy

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


default: False
backend: pants.backend.python.lint.pylint

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


default: False
backend: pants.backend.experimental.python.lint.pyupgrade

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


default: False
backend: pants.backend.python.lint.yapf

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


Iterable[str] | None
default: ('*.py', '*.pyi', '!test_*.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.ext', 'test_*.ext', '!test_ignore.ext'].


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 /home/josh/work/scie-pants/dist/pants --tag='integration_test' test :: to only run on targets with that tag.