Python math.prod() Method

---

---

The Python math.prod() method is used to calculate the product of all elements in a given iterable. Mathematically, it is denoted as −

prod(x1, x2, x3, ..., xn) = x1 × x2 × x3 × ... × xn

For example, if we have a list "[2, 3, 4, 5]", the "math.prod([2, 3, 4, 5])" method call will return 2 × 3 × 4 × 5 = 120.

Syntax

Following is the basic syntax of the Python math.prod() method −

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

Parameters

This method accepts the following parameters −

• iterable − It is the iterable (such as a list, tuple, or generator) whose element's product is to be calculated.

• start (optional) − It specifies the starting value for the product. It's default value is 1.

Return Value

The method returns the product of all the elements in the iterable.

Example 1

In the following example, we are calculating the product of all elements in the list "[1, 2, 3, 4, 5]" −

import math
numbers = [1, 2, 3, 4, 5]
result = math.prod(numbers)
print("The result obtained is:",result)         

Output

The output obtained is as follows −

The result obtained is: 120

Example 2

Here, we are using a generator expression to generate numbers from "1" to "5". We then calculate the product of these numbers −

import math
numbers = (i for i in range(1, 6))
result = math.prod(numbers)
print("The result obtained is:",result)  

Output

Following is the output of the above code −

The result obtained is: 120

Example 3

Now, we are calculating the product of all the fractional elements in the list "[0.5, 0.25, 0.1]" −

import math
numbers = [0.5, 0.25, 0.1]
result = math.prod(numbers)
print("The result obtained is:",result)  

Output

We get the output as shown below −

The result obtained is: 0.0125

Example 4

In this example, we are calculating the product of an empty list −

import math
result = math.prod([])
print("The result obtained is:",result)  

Output

The result produced is as shown below −

The result obtained is: 1