Multiply Python (8kyu)

Let's start with Multiply kata. I have to solve this one when I signed up for the Codewars account. It is some kind of validation, I guess.

Chek kata on Codewars

Description:

The code does not execute properly. Try to figure out why.

We start with this code:

def multiply(a, b):
  a * b

We can solve it just by adding the return

def multiply(a, b):
  return a * b

Let's check others solutions.

Some people thought about edge cases. The most popular one is:

def multiply(a, b):
    if isinstance(a, (int, float, complex)):
        if isinstance(b, (int, float, complex)):
            return a * b

The main idea here is to use isinstance.

The isinstance() function returns True if the specified object is of the specified type, otherwise False.

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One more popular solution is to use lambda function

multiply = lambda a, b: a * b