random.getrandbits() 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.getrandbits()

The getrandbits() method of the random module is used to return an integer with a specified number of bits. The number of bits required in the result is passed as an parameter in the method. Examples :

Input : getrandbits(4)
Output : 14
(the binary equivalent of 14 is 1110 which has 4 bits)

Input : getrandbits(16)
Output : 60431
(the binary equivalent of 60431 is 1110110000001111 
which has 16 bits)

Example 1:

Python3

# import the random module
import random

# a random number with 4 bits
print(random.getrandbits(4))

# a random number with 16 bits
print(random.getrandbits(16))

Output : 

10
49195

Example 2:

Python3

# import the random module
import random

# 5 random number with 4 bits
for i in range(4):
    print(random.getrandbits(4))

Output:

10
0
1
14