Find cube root of a number in Python

In this tutorial, we are going to learn how to find the cube root of a number in Python.

How to find the cube root of a number in Python

Update: Some of our viewers reported the code was not working properly so I have added a new updated code here in the first place:

x = 8
cube_root = x ** (1/3)
print(cube_root)

Output:

2.0

If you want to remove that decimal point after the digit you do this:

x = 8
cube_root = x ** (1/3)
cube_root_int = int(cube_root)
print(cube_root_int)

Output:

2

Let us understand with an example.
Suppose a number stored in a variable.

a=125

We can find the cube root of 125 using a trick :

a=125
print(a**(1/3))

As we know the cube root of 125 is 5. So it will return 5.
Note:- This trick will not work in case of negative integers

5.0

If we want to find the cube root of a negative integer. Then we have to make some changes in the above trick.

a=-125
print(-(-a)**(1/3))

-5.0

Function to find cube root using Python:

We can define a function for cube root. When a user inputs a number for cube root, it will automatically return the cube root of the number.

def cube_root(x):
        return x**(1/3)
print(cube_root(27))

As we can see, I have defined a function cube root. And I have called the same function with input 27. So it will return the cube root of 27.

3.0

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