Python math.gamma() Method Last Updated : 03 Dec, 2020 Comments Improve Suggest changes Like Article Like Report Python in its language allows various mathematical operations, which has manifolds application in scientific domain. One such offering of Python is the inbuilt gamma() function, which numerically computes the gamma value of the number that is passed in the function. Syntax : math.gamma(x) Parameters : x : The number whose gamma value needs to be computed. Returns : The gamma value, which is numerically equal to "factorial(x-1)". Code #1 : Demonstrating the working of gamma() Python3 # Python code to demonstrate # working of gamma() import math # initializing argument gamma_var = 6 # Printing the gamma value. print ("The gamma value of the given argument is : " + str(math.gamma(gamma_var))) Output: The gamma value of the given argument is : 120.0 factorial() vs gamma() The gamma value can also be found using factorial(x-1), but the use case of gamma() is because, if we compare both the function to achieve the similar task, gamma() offers better performance. Code #2 : Comparing factorial() and gamma() Python3 1== # Python code to demonstrate # factorial() vs gamma() import math import time # initializing argument gamma_var = 6 # checking performance # gamma() vs factorial() start_fact = time.time() res_fact = math.factorial(gamma_var-1) print ("The gamma value using factorial is : " + str(res_fact)) print ("The time taken to compute is : " + str(time.time() - start_fact)) print ('\n') start_gamma = time.time() res_gamma = math.gamma(gamma_var) print ("The gamma value using gamma() is : " + str(res_gamma)) print ("The time taken to compute is : " + str(time.time() - start_gamma)) Output: The gamma value using factorial is : 120 The time taken to compute is : 9.059906005859375e-06 The gamma value using gamma() is : 120.0 The time taken to compute is : 5.245208740234375e-06 Comment More infoAdvertise with us M manjeet_04 Follow Improve Article Tags : Python Python math-library Python math-library-functions Practice Tags : python Explore Python FundamentalsPython Introduction 3 min read Input and Output in Python 4 min read Python Variables 6 min read Python Operators 5 min read Python Keywords 2 min read Python Data Types 8 min read Conditional Statements in Python 3 min read Loops in Python - For, While and Nested Loops 7 min read Python Functions 8 min read Recursion in Python 6 min read Python Lambda Functions 6 min read Python Data StructuresPython String 6 min read Python Lists 6 min read Python Tuples 6 min read Dictionaries in Python 7 min read Python Sets 10 min read Python Arrays 9 min read List Comprehension in Python 4 min read Advanced PythonPython OOP Concepts 11 min read Python Exception Handling 6 min read File Handling in Python 4 min read Python Database Tutorial 4 min read Python MongoDB Tutorial 2 min read Python MySQL 9 min read Python Packages 12 min read Python Modules 7 min read Python DSA Libraries 15 min read List of Python GUI Library and Packages 11 min read Data Science with PythonNumPy Tutorial - Python Library 3 min read Pandas Tutorial 6 min read Matplotlib Tutorial 5 min read Python Seaborn Tutorial 15+ min read StatsModel Library- Tutorial 4 min read Learning Model Building in Scikit-learn 8 min read TensorFlow Tutorial 2 min read PyTorch Tutorial 7 min read Web Development with PythonFlask Tutorial 8 min read Django Tutorial | Learn Django Framework 10 min read Django ORM - Inserting, Updating & Deleting Data 4 min read Templating With Jinja2 in Flask 6 min read Django Templates 7 min read Python | Build a REST API using Flask 3 min read How to Create a basic API using Django Rest Framework ? 4 min read Python PracticePython Quiz 3 min read Python Coding Practice 1 min read Python Interview Questions and Answers 15+ min read Like