if multiple values in an array are the same, pick one at random python code example

Example 1: python choose random sample from list

import random
sequence = [i for i in range(20)]
subset = random.sample(sequence, 5) #5 is the lenth of the sample
print(subset) # prints 5 random numbers from sequence (without replacement)

Example 2: python randomly sample entry from a set

# Basic syntax:
import random
random.sample(your_set, number_of_elements)
# Where:
#	- number_of_elements is the number of elements you want to sample
# 		without replacement from your_set
# Note, the samples elements are returned as a list. Use set(the_list)
#	to convert back to a set

# Example usage:
your_set = {'a', 'bunch', 'of', 'unique', 'words'}
random.sample(your_set, 1)
--> ['words']

random.sample(your_set, 3)
--> ['words', 'of', 'a']