math.log()

Returns the natural logarithm of n.

math.log(n, base)

base is optional and it’s the logarithmic base to use. Default is e.

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

import math

print(math.log(12))

# Output: 2.4849066497880004

Use math.log() to return the natural log of 12 (base 5):

import math

print(math.log(12, 5))

# Output: 1.5439593106327716