random selection python code example

Example 1: sample 1 item from array python

import random
cakes = ['lemon', 'strawberry', 'chocolate']
random.choice(cakes)
# prints 1 randomly selected item from the collection of n items with 
# the probability of selection as 1/n

Example 2: 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 3: choice random python

import random

#sampling with replacement
list = [20, 30, 40, 50 ,60, 70, 80]
sampling = random.choices(list, k=4)
print("Randomly selected multiple choices using random.choices() ", sampling)

Example 4: random picker in python

import random
#dictionary
x_dict = {30:60, 20:40,10:20}
key = random.choice(list(x_dict))
print (key)#if you want it to print 30, 20, or 10
print (x_dict[key])#if you want it to print 60, 40, or 20
print (key,"-", x_dict[key])# if you want to print 30 - 60, 20-40,or 10-20