Formed in 2009, the Archive Team (not to be confused with the archive.org Archive-It Team) is a rogue archivist collective dedicated to saving copies of rapidly dying or deleted websites for the sake of history and digital heritage. The group is 100% composed of volunteers and interested parties, and has expanded into a large amount of related projects for saving online and digital history.
Python math.gamma() Method
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()
# Python code to demonstrate# working of gamma()import math # initializing argumentgamma_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()
# Python code to demonstrate# factorial() vs gamma()import mathimport time # initializing argumentgamma_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
Please Login to comment...