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The Python math.lgamma() function returns the natural logarithm of the absolute value of the gamma function (log gamma function) of the argument. The log gamma function of x is defined as:

lgamma
Log-gamma Function

Syntax

math.lgamma(x)   

Parameters

x Required. Specify the value.

Return Value

Returns the natural logarithm of the absolute value of the gamma function of the argument.

Example:

The example below shows the usage of lgamma() function.

import math

print(math.lgamma(0.1))
print(math.lgamma(1.5))
print(math.lgamma(2.5),"\n")

print(math.lgamma(-0.1))
print(math.lgamma(-1.5))
print(math.lgamma(-2.5))

The output of the above code will be:

2.2527126517342055
-0.12078223763524543
0.2846828704729196 

2.3689613327287886
0.8600470153764812
-0.05624371649767457

❮ Python Math Module

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