By default, the math.log function calculates the logarithm of a number, base e. You can optionally specify a base as the second argument.
import math
import cmath
math.log(5) # = 1.6094379124341003
# optional base argument. Default is math.e
math.log(5, math.e) # = 1.6094379124341003
cmath.log(5) # = (1.6094379124341003+0j)
math.log(1000, 10) # 3.0 (always returns float)
cmath.log(1000, 10) # (3+0j)
Special variations of the math.log function exist for different bases.
# Logarithm base e - 1 (higher precision for low values)
math.log1p(5) # = 1.791759469228055
# Logarithm base 2
math.log2(8) # = 3.0
# Logarithm base 10
math.log10(100) # = 2.0
cmath.log10(100) # = (2+0j)
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Simple Mathematical Operators:
*
Logarithms