Python – math.prod() method

Last Updated : 23 Jan, 2020

Math module in Python contains a number of mathematical operations, which can be performed with ease using the module. math.prod() method in Python is used to calculate the product of all the elements present in the given iterable. Most of the built-in containers in Python like list, tuple are iterables. The iterable must contain numeric value else non-numeric types may be rejected.
This method is new in Python version 3.8.

Syntax: math.prod(iterable, *, start = 1)

Parameters:
iterable: an iterable containing numeric values
start: an integer representing the start value. start is a named (keyword-only) parameter and its default value is 1.

Returns: the calculated product of all elements present in the given iterable.

Code #1: Use of math.prod() method

# Python Program to explain math.prod() method 
  
# Importing math module 
import math 
  
# list 
arr = [1, 2, 3, 4, 5] 
  
# Calculate the product of 
# of all elements present 
# in the given list 
product = math.prod(arr) 
print(product) 
  
  
# tuple 
tup = (0.5, 0.6, 0.7) 
  
# Calculate the product  
# of all elements present 
# in the given tuple 
product = math.prod(tup) 
print(product) 
  
  
# range 
seq = range(1, 11) 
  
# Calculate the product  
# of all elements present 
# in the given range 
product = math.prod(seq) 
print(product) 
  
# As the start value is not specified  
# it will default to 1 

Output:

120
0.21
3628800

Code #2: if start parameter is explicitly specified

# Python Program to explain math.prod() method 
  
# Importing math module 
import math 
  
  
# By default start value is 1 
# but can be explicitly provided 
# as a named (keyword-only) parameter 
  
# list 
arr = [1, 2, 3, 4, 5] 
  
# Calculate the product of 
# of all elements present 
# in the given list 
product = math.prod(arr, start = 2) 
print(product) 

Output:

Code #3: When the given iterable is empty

# Python Program to explain math.prod() method 
  
# Importing math module 
import math 
  
# If the given input iterable 
# is empty, then this method 
# returns the start value  
  
# list 
arr = [] 
  
# Calculate the product of 
# of all elements present 
# in the given list 
product = math.prod(arr) 
print(product) 
  
  
# Tuple 
tup = () 
  
# Calculate the product of 
# of all elements present 
# in the given tuple 
product = math.prod(tup, start = 5) 
print(product) 