Dynamic help text, using metavars or something else?

[albalamia]

First Check

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Commit to Help

• I commit to help with one of those options 👆

Example Code

import typer


def helperText(module: str, sub_cmd: str):
    sub_cmd_list = ["archive"]

    if not sub_cmd:
        return f"The `{command}` command is used to parse {command} data from one format to another."

    if sub_cmd == "dry":
        return f"Perform a dry run to validate the {command} data parsing without making any changes."

    if sub_cmd in sub_cmd_list:
        return f"Parse the {command} data and upload it to {sub_command} destination."


app = typer.Typer(help=helperText("data"))


@app.command("dry", help=helperText("data", "dry"))
def cli_parse_data(tenant: str):
    data = {}
    print(tenant)
    print(data)


@app.command("archive", help=helperText("data", "archive"))
def cli_archive_data(tenant: str):
    data = {}
    print(tenant)
    print(data)
    upload(data)


if __name__ == "__main__":
    app()

Description

Is there a way to dynamically create a help string to include the name of the command used and sub-command?

The docs show Metavar being accessible but it is only for params. It would be really cool to have this feature for the whole context.

@app.command("archive")
def cli_dry():
    """
    Parse the `<PARENT_COMMAND>` and upload it to `<COMMAND>` destination.
    """
    print("Hello World")

output

$app data archive --help
Parse the `data` and upload it to `archive` destination.

Operating System

Windows

Operating System Details

No response

Typer Version

0.9.4

Python Version

3.11.2

Additional Context

No response