Django Typer

Use Typer to define the CLI for your Django management commands. Provides a TyperCommand class that inherits from BaseCommand and allows typer-style annotated parameter types. All of the BaseCommand functionality is preserved, so that TyperCommand can be a drop in replacement.

django-typer makes it easy to:

Define your command CLI interface in a clear, DRY and safe way using type hints

Create subcommand and group command hierarchies.

Use the full power of Typer’s parameter types to validate and parse command line inputs.

Create beautiful and information dense help outputs.

Configure the rendering of exception stack traces using rich.

Install shell tab-completion support for TyperCommands and normal Django commands for bash, zsh, fish and powershell.

Create custom and portable shell tab-completions for your CLI parameters.

Refactor existing management commands into TyperCommands because TyperCommand is interface compatible with BaseCommand.

Installation

Clone django-typer from GitHub or install a release off PyPI :
pip install django-typer
rich is a powerful library for rich text and beautiful formatting in the terminal. It is not required, but highly recommended for the best experience:
pip install "django-typer[rich]"
Add django_typer to your INSTALLED_APPS setting:
INSTALLED_APPS = [ ... 'django_typer', ]
You only need to install django_typer as an app if you want to use the shellcompletion command to enable tab-completion or if you would like django-typer to install rich traceback rendering for you - which it does by default if rich is also installed.

Basic Example

For example TyperCommands can be a very simple drop in replacement for BaseCommands. All of the documented features of BaseCommand work!

A Basic Command

from django_typer import TyperCommand


class Command(TyperCommand):
    def handle(self, arg1: str, arg2: str, arg3: float = 0.5, arg4: int = 1):
        """
        A basic command that uses Typer
        """

Multiple Subcommands Example

Or commands with multiple subcommands can be defined:

A Command w/Subcommands

import typing as t

from django.utils.translation import gettext_lazy as _
from typer import Argument

from django_typer import TyperCommand, command


class Command(TyperCommand):
    """
    A command that defines subcommands.
    """

    @command()
    def create(
        self,
        name: t.Annotated[str, Argument(help=_("The name of the object to create."))],
    ):
        """
        Create an object.
        """

    @command()
    def delete(
        self, id: t.Annotated[int, Argument(help=_("The id of the object to delete."))]
    ):
        """
        Delete an object.
        """

Grouping and Hierarchies Example

Or more complex groups and subcommand hierarchies can be defined. For example this command defines a group of commands called math, with subcommands divide and multiply. The group has a common initializer that optionally sets a float precision value. We would invoke this command like so:

./manage.py hierarchy math --precision 5 divide 10 2.1
4.76190
./manage.py hierarchy math multiply 10 2
20.00

Any number of groups and subcommands and subgroups of other groups can be defined allowing for arbitrarily complex command hierarchies.

A Command w/Grouping Hierarchy

import typing as t
from functools import reduce

from django.utils.translation import gettext_lazy as _
from typer import Argument, Option

from django_typer import TyperCommand, group


class Command(TyperCommand):

    help = _("A more complex command that defines a hierarchy of subcommands.")

    precision = 2

    @group(help=_("Do some math at the given precision."))
    def math(
        self,
        precision: t.Annotated[
            int, Option(help=_("The number of decimal places to output."))
        ] = precision,
    ):
        self.precision = precision

    @math.command(help=_("Multiply the given numbers."))
    def multiply(
        self,
        numbers: t.Annotated[
            t.List[float], Argument(help=_("The numbers to multiply"))
        ],
    ):
        return f"{reduce(lambda x, y: x * y, [1, *numbers]):.{self.precision}f}"

    @math.command()
    def divide(
        self,
        numerator: t.Annotated[float, Argument(help=_("The numerator"))],
        denominator: t.Annotated[float, Argument(help=_("The denominator"))],
        floor: t.Annotated[bool, Option(help=_("Use floor division"))] = False,
    ):
        """
        Divide the given numbers.
        """
        if floor:
            return str(numerator // denominator)
        return f"{numerator / denominator:.{self.precision}f}"

Contents: