Reporting a few CLI glitches

[amotl]

Dear Benjamin,

thanks for your ongoing efforts to improve the parameter flux compensator. Sometimes, there is a little fallout on the command-line interface, so I wanted to take the chance to report about some issues I have been able to discover while working on the CLI help text.

For now, all items are about data from DWD » OBSERVATION.

With kind regards,
Andreas.

1. No data when filtering by --station=1048,4411

wetterdienst values --provider=dwd --network=observation --parameter=kl --resolution=daily --period=recent --station=1048,4411

2023-01-21 15:54:42,110 [wetterdienst.core.scalar.request] INFO   : Processing request DwdObservationRequest(parameter=[(kl/kl)], resolution=daily, period=[recent], start_date=None, end_date=None, humanize=True, tidy=False, si_units=True)
2023-01-21 15:54:42,359 [wetterdienst.core.scalar.request] INFO   : Filtering for station_id=['1048,4411']
2023-01-21 15:54:42,367 [wetterdienst.core.scalar.values ] ERROR  : No data available for given constraints
2023-01-21 15:54:42,367 [wetterdienst.ui.core            ] ERROR  : No data available for given constraints

Remark: @gutzbenj already confirmed that CommaSeparator = StringListParamType(",") is apparently broken with Cloup, so Wetterdienst is unable to parse multiple items from a comma-separated list. Currently, it only works with single items.

2. Croaks on monthly and annual, when filtering by --station

When acquiring monthly or annual data, and filtering by --station, the program croaks. Example:

wetterdienst values --provider=dwd --network=observation --parameter=kl --resolution=monthly --station=1048

ValueError: DataFrame columns must be unique for orient='records'.

Opposed to that, using --resolution=daily works. When not filtering by station, and using --all instead, it also works.

3. Data for requested parameter missing

The response does not include any data from temperature_air_200/kl. Only data for precipitation_height is returned.

# Acquire data for specific parameter and dataset
wetterdienst values --provider=dwd --network=observation \
    --parameter=precipitation_height/precipitation_more,temperature_air_200/kl \
    --resolution=hourly --date=2020-06-15T12/2020-06-16T12 --station=1048

[amotl]

All of the above issues have been swiftly resolved by @gutzbenj. Thank you so much!

1. No data when filtering by --station=1048,4411

@gutzbenj has a fix for that at GH-853. Thanks a stack!

2. Croaks on monthly and annual, when filtering by --station

@gutzbenj told me the corresponding examples need to use the --tidy flag. Thanks, it will be fixed by 41c4d01. My suggestion to improve the usability would be to catch that DataFrame columns must be unique exception, and respond to the user with something like The result can not be represented in tabular format. Please use the "--tidy" option..

3. Data for requested parameter missing

@gutzbenj told me a correct incantation, which I also added to 41c4d01. Thanks again!