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Showing content from https://github.com/pandas-dev/pandas/issues/46613 below:

Interval) · Issue #46613 · pandas-dev/pandas · GitHub

Is your feature request related to a problem?

Not a problem. Just a feature I would have liked to have! :-)

I would like to be able to know if an Interval is contained into another Interval.

e.g. [2, 3) is contained in [2, 4) but not in (2, 4]

Describe the solution you'd like

Something like this

def interval_contains(a: pd.Interval, b: pd.Interval) -> bool:
    res = a.left <= b.left and a.right >= b.right
    if a.open_left and b.closed_left:
        res &= a.left < b.left
    if a.open_right and b.closed_right:
        res &= a.right > b.right
    return res
API breaking implications

Currently, if you do something like this

a = pd.Interval(2, 3, closed="left")
b = pd.Interval(2, 4, closed="left")
print(a in b)

it raises the following exception

TypeError: __contains__ not defined for two intervals

Adding support for another type of object in __contains__ would not break the API, but just extend it.

Describe alternatives you've considered

Could not find any.


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