The reduce () function of Python

Reduce () The function f passed in must receive two parameters, and reduce () calls function f repeatedly on each element of the list and returns the final result value. (That is, the return value for the last time)

#reduce () function fromFunctoolsImportReducedeff (x, y):returnx+yPrint(Reduce (f, [1, 3, 5, 7, 9]))#first two elements are computed: F (1, 3), and the result is 4;#then the result and the 3rd element are calculated: F (4, 5), the result is 9;#then the result and the 4th element are calculated: F (9, 7), the result is three;#then the result and the 5th element are calculated: F (16, 9), the result is;#since there are no more elements, the calculation ends and the result 25 is returned. #similar to summationreduce (f, [1, 3, 5, 7, 9], 100)# the#because the start is (100+1) to start the calculation

The reduce () function of Python