Python math.sqrt() Function

Python math 模块Python math Module

Python math.sqrt(x)The function returns the square root of x.

The number must be greater than or equal to 0.

Syntax

The syntax of the math.sqrt() function is as follows:

math.sqrt(x)

Parameter description:

  • xx -- Required. A number. If x is not a number, returns TypeError. If the number is less than 0, returns ValueError.

Return Value

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

Example

The following example returns the square root of a number:

Example

# Import the math package
import math

# Output the square root
print (math.sqrt(9))
print (math.sqrt(25))
print (math.sqrt(16))

Output result:

3.0
5.0
4.0

Python math 模块Python math Module

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