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clear and readable solution in Clear category for Convert and Aggregate by kdim
def conv_aggr(data: list[tuple[str, int]]) -> dict[str, int]:
result = {}
for key, value in data:
result[key] = result.setdefault(key, 0) + value
return {key: value for key, value in result.items() if key and value}
print("Example:")
print(conv_aggr([("a", 7), ("b", 8), ("a", 10)]))
assert conv_aggr([("a", 7), ("b", 8), ("a", 10)]) == {"a": 17, "b": 8}
assert conv_aggr([]) == {}
assert conv_aggr([("a", 5), ("a", -5)]) == {}
assert conv_aggr([("a", 5), ("a", 5), ("a", 0)]) == {"a": 10}
assert conv_aggr([("a", 5), ("", 15)]) == {"a": 5}
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Sept. 10, 2022
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