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Python | Arbitrary List Product

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  • Last Updated : 27 Feb, 2020
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Sometimes, in making programs for gaming or gambling, we come across the task of creating the list all with arbitrary numbers and perform its product. This task has to performed in general using loop and appending the arbitrary numbers one by one and then performing product. But there is always requirement to perform this in most concise manner. Lets discuss certain ways in which this can be done.

Method #1 : Using list comprehension + randrange() + loop
The naive method to perform this particular task can be shortened using the list comprehension. randrange function is used to perform the task of generating the random numbers. The task of performing product is done using loop.




# Python3 code to demonstrate 
# Arbitrary List Product
# using list comprehension + randrange() + loop
import random
  
# getting Product 
def prod(val) : 
    res = 1 
    for ele in val: 
        res *= ele 
    return res  
  
# using list comprehension + randrange() + loop
# Arbitrary List Product
res = prod([random.randrange(1, 50, 1) for i in range(7)])
  
# printing result
print ("Arbitrary number product list is : " + str(res))

Output :

Arbitrary number product list is : 1182384000

 

Method #2 : Using random.sample() + loop
This single utility function performs the exact required as asked by the problem statement, it generated N no. of arbitrary numbers in a list in the specified range and returns the required list. The task of performing product is done using loop.




# Python3 code to demonstrate 
# Arbitrary List Product
# using random.sample() + loop
import random
  
# getting Product 
def prod(val) : 
    res = 1 
    for ele in val: 
        res *= ele 
    return res  
  
# using random.sample() + loop
# Arbitrary List Product
res = prod(random.sample(range(1, 50), 7))
  
# printing result
print ("Arbitrary number product list is : " + str(res))

Output :

Arbitrary number product list is : 1182384000

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