Python math.sqrt()

The Python .sqrt() function is used to calculate the square root of a given number and is a part of the math library. If the number is negative, the function raises a ValueError.

Python .sqrt() Syntax

import math

math.sqrt(num)

Parameters:

• num: The number whose square root is to be calculated.

Return value:

Returns a floating-point number representing the square root of num.

Example 1: Using Python .sqrt() with an Integer

This example uses Python .sqrt() to calculate the square root of an integer:

import math

print(math.sqrt(4))

Copy to clipboard
Copy to clipboard

Here is the output:

2.0

Copy to clipboard
Copy to clipboard

Example 2: Using Python .sqrt() with a Float

This example uses Python .sqrt() to calculate the square root of a float:

import math

print(math.sqrt(6.25))

Copy to clipboard
Copy to clipboard

Here is the output:

2.5

Copy to clipboard
Copy to clipboard

Codebyte Example: Handling Multiple Values Using Python .sqrt()

This codebyte example uses Python .sqrt() to calculate the square roots of multiple values:

Visit us
Visit us
Hide code
Code
Output
Hide output
Copy to your clipboard
Copy Codebyte
Run

Frequently Asked Questions

1. What type of value is returned by Python .sqrt()?

The Python .sqrt() function always returns a float, even if the input is an integer.

2. What does “sqrt” stand for?

sqrt stands for square root. It calculates the value that, when multiplied by itself, equals the input number.

3. Is sqrt() a function?

Yes. sqrt() is a built-in function provided by Python’s math module. You need to import the module before using it:

import math
print(math.sqrt(16))  # Output: 4.0

Copy to clipboard
Copy to clipboard