[FEATURE] Support datetime.date in addition to datetime.datetime

[tiangolo]

[FEATURE] Support datetime.date in addition to datetime.datetime

[tiangolo]

Hey @lbjarre !

So, as you mention, you can actually use datetime and pass just a date with year, month, and day.

The problem is that the data type is implemented in Click, not in Typer, and implementing support for that specific use case would probably involve a lot of extra custom code in Typer itself.

Nevertheless, you can specify your own format, like:

from datetime import datetime
import typer


def main(date: datetime = typer.Argument(..., formats=["%Y-%m-%d"])):
    typer.echo(f"Year is: {date.year}")


if __name__ == "__main__":
    typer.run(main)

[github-actions]

Assuming the original issue was solved, it will be automatically closed now. But feel free to add more comments or create new issues.

[NikosAlexandris]

Nevertheless, you can specify your own format, like:

from datetime import datetime
import typer


def main(date: datetime = typer.Argument(..., formats=["%Y-%m-%d"])):
    typer.echo(f"Year is: {date.year}")


if __name__ == "__main__":
    typer.run(main)

This does not play nice with xarray's time indexing for example. An input like 2023-05 should be kept like that : 2023-05 to retrieve this slice of data. For example :

ds.sel(time="2000-01")
Out[10]: 
<xarray.Dataset>
Dimensions:  (time: 744)
Coordinates:
  * time     (time) datetime64[ns] 2000-01-01 ... 2000-01-31T23:00:00
Data variables:
    foo      (time) int64 0 1 2 3 4 5 6 7 8 ... 736 737 738 739 740 741 742 743

Instead, the following :

time: Annotated[Optional[datetime], typer.Argument(
            formats=["%Y", "%Y-%m", "%Y-%m-%d", "%Y-%m-%d %H", "%Y-%m-%d %H:%M", "%Y-%m-%d %H:%M:%S", "%Y-%m-%dT%H", "%Y-%m-%dT%H:%M", "%Y-%m-%dT%H:%M:%S", ],

will return, depending on input, always the first day and first month, even if not given :-/.
For example :

• 2023 in the command line will be converted to 'time': datetime.datetime(2023, 1, 1, 0, 0),
• 2023-05 in the command line will be converte to 'time': datetime.datetime(2023, 5, 1, 0, 0),
• and so on

Trying to handle all cases manually is too much work, right? Any ideas?