Q:
How to multiply all elements in list Python?
belongs to collection: Python Exercises, Practice Questions and Solutions
Python Exercises, Practice Questions and Solutions
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Using traversal method
Here, we have taken a variable 'product' and initialize the value 1. Next, we have traversed the list till the end and multiply every element with the product. The value of 'product' at last is the final result.
Output of the above code:
Product of first list: 66 Product of second list: 80
Using numpy.prod()
Numpy prod() method returns the product of the array of elements over a given axis. This method returns an integer or a float value depending on the multiplication result. In the given example, we import the numpy module and use the np.prod() method to get the product of all elements of the list.
Output of the above code:
Product of first list: 48 Product of second list: 80
Using functools.reduce()
The reduce() function is defined in the functools module. It accepts a function in the first argument and an iterable in the second argument. We can use this function to multiply all the elements of the list by providing operator.mul in the first argument and list in the second.
Output of the above code:
Product of elements of list: 280
Using math.prod
We can also use the math.prod() method to easily multiply the elements of the list. The math.prod is a new function and available from Python 3.8.
Output of the above code:
need an explanation for this answer? contact us directly to get an explanation for this answerProduct of first list: 88 Product of second list: 90