Python reduce

Python reduce()

from functools import reduce
items = [1,2,3,4,5]
sum_all = reduce(lambda x,y: x + y, items)
 
print (sum_all) #15

Source: grepper.com

Python reduce

# python code to demonstrate working of reduce()
 
# importing functools for reduce()
import functools
 
# initializing list
lis = [1, 3, 5, 6, 2, ]
 
# using reduce to compute sum of list
print("The sum of the list elements is : ", end="")
print(functools.reduce(lambda a, b: a+b, lis))
 
# using reduce to compute maximum element from list
print("The maximum element of the list is : ", end="")
print(functools.reduce(lambda a, b: a if a > b else b, lis))

Source: geeksforgeeks.org

Reduce () in python

#The reduce() function accepts a function and a sequence and
#returns a single value calculated as follows:

#1) Initially, the function is called with the first two items from the sequence 
#and the result is returned.
#2) The function is then called again with the result obtained in step 1 
#and the next value in the sequence. This process keeps repeating 
#until there are items in the sequence.

>>>
>>> from functools import reduce
>>> 
>>> def do_sum(x1, x2): return x1 + x2
... 
>>> 
>>> reduce(do_sum, [1, 2, 3, 4])
10
>>>

-2

Source: thepythonguru.com

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