Python Program For Square Root Of A Number (With Code)

In this tutorial, you will learn about the Python program for the square root of a number.

In this article, we will explore how to write a Python program to calculate the square root of a number.

The square root of a number is a mathematical operation that gives the value which, when multiplied by itself, equals the original number.

By using the math module in Python, we can easily calculate the square root of any given number. Let’s dive into the details!

To calculate the square root of a number in Python, we can use the sqrt() function from the math module.

First, we need to import the math module by including the following line at the beginning of our program..

import math

Now, let’s define a function called calculate_square_root() that takes a number as an argument and returns its square root.

Here’s the Python program:

import math

def calculate_square_root(number):
    return math.sqrt(number)

By calling the calculate_square_root() function and passing a number as an argument, we can obtain its square root.

For example, to calculate the square root of 16, we can use the following code

result = calculate_square_root(16)
print(result)

Here is how the complete code.

import math

Python Program for Square Root of a Number

import math

def calculate_square_root(number):
    return math.sqrt(number)
result = calculate_square_root(16)
print(result)

Output

How does the sqrt() function work in Python?

The sqrt() function in Python is part of the math module and returns the square root of a given number.

It utilizes the mathematical algorithm to compute the square root accurately.

Can the sqrt() function handle negative numbers?

No, the sqrt() function in Python cannot handle negative numbers.

If you pass a negative number as an argument, it will raise a ValueError exception.

How can I round the square root to a specific number of decimal places?

To round the square root to a specific number of decimal places, you can make use of the round() function in Python.

Here’s an example:

result = round(calculate_square_root(16), 2)
print(result)

The output will be 4.0, rounded to two decimal places.

Are there any alternative methods to calculate the square root in Python?

Yes, apart from using the sqrt() function from the math module, there are other ways to calculate the square root in Python.

One popular alternative is using the exponentiation operator ** with the fractional power of 0.5.

Here’s an example:

result = 16 ** 0.5
print(result)

The output will be 4.0, which is the square root of 16.

Can I calculate the square root of complex numbers in Python?

Yes, Python provides support for complex numbers, including the calculation of their square roots. You can use the cmath module instead of math to perform complex number operations.

How can I handle exceptions when calculating the square root in Python?

To handle exceptions that might occur during the square root calculation, you can use a try except block.

For example:

try:
    result = calculate_square_root(-16)
    print(result)
except ValueError:
    print("Cannot calculate the square root of a negative number.")

The output will be the error message “Cannot calculate the square root of a negative number.”.

In this article, we learned how to write a Python program to calculate the square root of a number.

By using the sqrt() function from the math module, we can easily obtain the square root value.

We also explored some frequently asked questions and discussed alternative methods, rounding, handling exceptions, and working with complex numbers.

Now you can confidently write your own Python programs to calculate square roots!

Happy Coding!