Interact should accept tuple of min, max, and value as input

[jsignell]

At the moment interact only supports passing value OR (min, max). It would be very helpful to be able to pass all three. For context - this came up in the context of making widgets from intake user parameters which have default values in addition to min, and max.

[jbednar]

Definitely. PR?

[jsignell]

The problem is that a tuple of three currently means (min, max, step) so either the value could be the 4th item, or the meaning of a 3 tuple would change.

[jbednar]

It would need to be the 4th item, then.

[jsignell]

For clarity - it would work just as well for my use case if there were a way to set function defaults from a dict.

This works as expected:

@interact(year=(2017, 2018), month=(1, 12), day=(1, 31))
def day(year=2018, month=1, day=1):
    return cat.anaconda_package_data_by_day(**locals())

But I need to set the interact kwargs with

ranges = {}
defaults = {}
for up in cat.anaconda_package_data_by_day._user_parameters:
    ranges[up.name] = (up.min, up.max)
    defaults[up.name] = up.default
print(ranges, defaults)

({'year': (2017, 2018), 'month': (1, 12), 'day': (1, 31)},
 {'year': 2018, 'month': 12, 'day': 1})

The issue is that those default values are in a dict and I don't know how to extract them into the function definition.