accumulate
- accumulate(iterable[, function, *, initial=None])
Return series of accumulated sums (or other binary function results).
© Python Software Foundation. PSF License Version 2 · Official docs ↗
Changed in 3.3, 3.8
- 3.3: Added the optional function parameter.
- 3.8: Added the optional initial parameter.
1 Example
>>> data = [3, 4, 6, 2, 1, 9, 0, 7, 5, 8] >>> list(accumulate(data, max)) # running maximum [3, 4, 6, 6, 6, 9, 9, 9, 9, 9] >>> list(accumulate(data, operator.mul)) # running product [3, 12, 72, 144, 144, 1296, 0, 0, 0, 0] # Amortize a 5% loan of 1000 with 10 annual payments of 90 >>> update = lambda balance, payment: round(balance * 1.05) - payment >>> list(accumulate(repeat(90, 10), update, initial=1_000)) [1000, 960, 918, 874, 828, 779, 728, 674, 618, 559, 497]
from the Python docs