click-compose
Composable Click callback utilities for building flexible CLI applications.
Installation
$ pip install click-composeOr with uv:
$ uv add click-composeQuick Start
click-compose provides utilities for composing Click callbacks:
multi_callback
Combine multiple callbacks into a single callback that applies them in sequence. Use a tuple for type-checked, type-changing chains of up to ten callbacks:
"""Example of using multi_callback to combine validators."""
import click
from click_compose import multi_callback
def validate_positive(
_ctx: click.Context | None,
_param: click.Parameter | None,
value: int,
) -> int:
"""Validate that value is positive."""
if value <= 0:
msg = "Must be positive"
raise click.BadParameter(message=msg)
return value
MAX_VALUE = 100
def validate_max_100(
_ctx: click.Context | None,
_param: click.Parameter | None,
value: int,
) -> int:
"""Validate that value is at most 100."""
if value > MAX_VALUE:
msg = "Must be <= 100"
raise click.BadParameter(message=msg)
return value
@click.command()
@click.option(
"--count",
type=int,
callback=multi_callback(
callbacks=(validate_positive, validate_max_100),
),
)
def cmd(count: int) -> None:
"""Example command with multiple validators."""
click.echo(message=f"Count: {count}")sequence_validator
Apply a validator to each element in a sequence (useful with multiple=True):
"""Example of using sequence_validator with multiple values."""
import click
from click_compose import sequence_validator
def validate_positive(
_ctx: click.Context | None,
_param: click.Parameter | None,
value: int,
) -> int:
"""Validate that value is positive."""
if value <= 0:
msg = "Must be positive"
raise click.BadParameter(message=msg)
return value
@click.command()
@click.option(
"--numbers",
multiple=True,
type=int,
callback=sequence_validator(validator=validate_positive),
)
def cmd(numbers: tuple[int, ...]) -> None:
"""Example command with sequence validation."""
click.echo(message=f"Sum: {sum(numbers)}")deduplicate
Remove duplicates from a sequence while preserving order (useful with multiple=True):
"""Example of using ``deduplicate`` to remove duplicate values."""
import click
from click_compose import deduplicate
@click.command()
@click.option(
"--tags",
multiple=True,
type=str,
callback=deduplicate,
)
def cmd(tags: tuple[str, ...]) -> None:
"""Example command that removes duplicate tags."""
click.echo(message=f"Unique tags: {', '.join(tags)}")Documentation
See the full documentation.
1 maintainer
Metadata
1 maintainer
Release files for click-compose 2026.9.16.1
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| click_compose-2026.9.16.1.tar.gz | 24.7 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| click_compose-2026.9.16.1-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 29.6 kB
Release files / click_compose-2026.9.16.1.tar.gz
| Download URL | click_compose-2026.9.16.1.tar.gz |
|---|---|
| Size | 24.7 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
b1416164b558f4e3fbf40b3684c64559bbad708b69303910f4f605d0efc08e45
|
|
BLAKE2b-256 checksum How to use checksums |
4bd2e20f646d494df34e6c8fe5f13480910158cea85d414322f6823c4d9c8cce
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 16, 2026.
Transparency logRelease files / click_compose-2026.9.16.1-py3-none-any.whl
| Download URL | click_compose-2026.9.16.1-py3-none-any.whl |
|---|---|
| Size | 4.9 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
259fe12e96702d70287db2b3c99346c6c9232ff5cad17f73c08f659603d4baa2
|
|
BLAKE2b-256 checksum How to use checksums |
13398141061e7aea59126c36444544fab7dd89eb3df00bb3764108e32207ecac
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 16, 2026.
Transparency log
