math.log()

The math.log() function returns the natural logarithm of a number or the logarithm of a number to the given base.

Syntax

math.log(n, base)

The math.log() function takes the following parameters:

• n is a required number or numeric expression to calculate the logarithm.
• base is an optional number to specify the logarithm base. The default value for the base is e.

The math.log() function returns a float value, the natural logarithm of n or the logarithm of n to base. If n is 0 or a negative number, it returns a ValueError.

Example

Use math.log() to return the natural log of 12 (base e):

import math

print(math.log(12))

# Output: 2.4849066497880004

Codebyte Example

The following example is runnable and uses the math.log() function to return the natural and base 10 logarithms of a number:

Code
Output
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