[Python] Accumulating lists in Polars

Say I have a pl.DataFrame() with 2 columns: The first column contains Date, the second List[str].

import polars as pl

df = pl.DataFrame([
pl.Series('Date', [2000, 2001, 2002]),
pl.Series('Ids', [
['a'],
['b', 'c'],
['d'],
])
])

Date Ids
2000 ['a']
2001 ['b', 'c']
2002 ['d']

Is it possible to accumulate the List[str] column so that each row contains itself and all previous lists in Polars? Like so:

Date Ids
2000 ['a']
2001 ['a', 'b', 'c']
2002 ['a', 'b', 'c', 'd']

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