python_source¶
A single Python source file.
Backend: pants.backend.python
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.
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].interpreter_constraints.
See https://www.pantsbuild.org/v2.18/docs/python-interpreter-compatibility for how these interpreter constraints are merged with the constraints of dependencies.
dependencies¶
type: Iterable[str] | None
default: None
Addresses to other targets that this target depends on, e.g. ['helloworld/subdir:lib', 'helloworld/main.py:lib', '3rdparty:reqs#django'].
This augments any dependencies inferred by Pants, such as by analyzing your imports. Use pants dependencies or pants peek on this target to get the final result.
See https://www.pantsbuild.org/v2.18/docs/targets for more about how addresses are formed, including for generated targets. You can also run pants list :: to find all addresses in your project, or 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. ./main.py:tgt; 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.
resolve¶
type: 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.
run_goal_use_sandbox¶
type: bool | None
default: None
Whether to use a sandbox when running this target. Defaults to [python].run_goal_use_sandbox.
If true, runs of this target with the run goal will copy the needed first-party sources into a temporary sandbox and run from there.
If false, runs of this target with the run goal will use the in-repo sources directly.
Note that this field only applies when running a target with the run goal. No other goals (such as test, if applicable) consult this field.
The former mode is more hermetic, and is closer to building and running the source as it were packaged in a pex_binary. Additionally, it may be necessary if your sources depend transitively on "generated" files which will be materialized in the sandbox in a source root, but are not in-repo.
The latter mode is similar to creating, activating, and using a virtual environment when running your files. It may also be necessary if the source being run writes files into the repo and computes their location relative to the executed files. Django's makemigrations command is an example of such a process.
source¶
type: str
required
A single file that belongs to this target.
Path is relative to the BUILD file's directory, e.g. source='example.ext'.
restartable¶
type: bool
default: False
If true, runs of this target with the run goal may be interrupted and restarted when its input files change.
skip_mypy¶
backend: pants.backend.python.typecheck.mypy
type: bool
default: False
If true, don't run MyPy on this target's code.
skip_black¶
backend: pants.backend.python.lint.black
type: bool
default: False
If true, don't run Black on this target's code.
skip_autoflake¶
backend: pants.backend.experimental.python.lint.autoflake
type: bool
default: False
If true, don't run Autoflake on this target's code.
skip_bandit¶
backend: pants.backend.python.lint.bandit
type: bool
default: False
If true, don't run Bandit on this target's code.
skip_pylint¶
backend: pants.backend.python.lint.pylint
type: bool
default: False
If true, don't run Pylint on this target's code.
skip_add_trailing_comma¶
backend: pants.backend.experimental.python.lint.add_trailing_comma
type: bool
default: False
If true, don't run add-trailing-comma on this target's code.
skip_pytype¶
backend: pants.backend.python.typecheck.pytype
type: bool
default: False
If true, don't run pytype on this target's code.
skip_docformatter¶
backend: pants.backend.python.lint.docformatter
type: bool
default: False
If true, don't run Docformatter on this target's code.
skip_flake8¶
backend: pants.backend.python.lint.flake8
type: bool
default: False
If true, don't run Flake8 on this target's code.
skip_isort¶
backend: pants.backend.python.lint.isort
type: bool
default: False
If true, don't run isort on this target's code.
skip_yapf¶
backend: pants.backend.python.lint.yapf
type: bool
default: False
If true, don't run yapf on this target's code.
skip_pydocstyle¶
backend: pants.backend.python.lint.pydocstyle
type: bool
default: False
If true, don't run pydocstyle on this target's code.
skip_pyupgrade¶
backend: pants.backend.experimental.python.lint.pyupgrade
type: bool
default: False
If true, don't run pyupgrade on this target's code.