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# random.vonmisesvariate() function in Python

random module is used to generate random numbers in Python. Not actually random, rather this is used to generate pseudo-random numbers. That implies that these randomly generated numbers can be determined.

## random.vonmisesvariate()

vonmisesvariate() is an inbuilt method of the random module. It is used to return a random floating point number with von Mises distribution or circular normal distribution.

Syntax : random.vonmisesvariate(mu, kappa)

Parameters :
mu : mean angle, expressed in radians between 0 and 2*pi
kappa : concentration parameter, greater than or equal to zero

Returns : a random von Mises distribution floating number

Example 1:

 # import the random moduleimport random  # determining the values of the parametersmu = 0kappa = 4  # using the vonmisesvariate() methodprint(random.vonmisesvariate(mu, kappa))

Output :

0.9429600175580171

Example 2: We can generate the number multiple times and plot a graph to observe the von Mises distribution.

 # import the required libraries import random import matplotlib.pyplot as plt     # store the random numbers in a  # list nums = [] mu = 0kappa = 4    for i in range(100):     temp = random.vonmisesvariate(mu, kappa)    nums.append(temp)         # plotting a graph plt.plot(nums) plt.show()

Output :

Example 3: We can create a histogram to observe the density of the von Mises distribution.

 # import the required libraries import random import matplotlib.pyplot as plt     # store the random numbers in a list nums = [] mu = 0kappa = 4    for i in range(10000):     temp = random.vonmisesvariate(mu, kappa)     nums.append(temp)         # plotting a graph plt.hist(nums, bins = 200) plt.show()

Output :

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