sum

builtins

function

sum(iterable, /, start=0)

Return the sum of a 'start' value (default: 0) plus an iterable of numbers

When the iterable is empty, return the start value.
This function is intended specifically for use with numeric values and
may reject non-numeric types.

© Python Software Foundation. PSF License Version 2 · Official docs ↗

Changed in 3.8, 3.12, 3.14

3.8: The start parameter can be specified as a keyword argument.
3.12: Summation of floats switched to an algorithm that gives higher accuracy and better commutativity on most builds.
3.14: Added specialization for summation of complexes, using same algorithm as for summation of floats.