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June 4, 2020 22:39
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Sum any nested level of iterables, with optional initial value
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from collections.abc import Iterable | |
def deep_add(*values, start=None): | |
def _traverser(parts): | |
for part in parts: | |
if isinstance(part, Iterable): | |
yield from _traverser(part) | |
else: | |
yield part | |
ivalues = _traverser(values) | |
if start is None: | |
try: | |
start = next(ivalues) | |
except StopIteration: | |
start = 0 | |
return sum(ivalues, start) |
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