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7-liner: defaultdict solution in Clear category for Convert and Aggregate by Stensen
from collections import defaultdict
def conv_aggr(data: list[tuple[str, int]]) -> dict[str, int]:
d = defaultdict(int)
for i, j in data:
d[i] += j
if not i or not d[i]: d.pop(i)
return d
Sept. 30, 2022
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