random_number_generation.py

import qiskit as qk

# Load saved account from memory
qk.IBMQ.load_accounts()

n = 3
q = qk.QuantumRegister(n)
c = qk.ClassicalRegister(n)
circ = qk.QuantumCircuit(q, c)

for j in range(n):
    circ.h(q[j])
    
circ.measure(q,c)

print (circ)

'''
The final circuit:
          ┌───┐┌─┐      
q0_0: |0> ┤ H ├┤M├──────
          ├───┤└╥┘┌─┐   
q0_1: |0> ┤ H ├─╫─┤M├───
          ├───┤ ║ └╥┘┌─┐
q0_2: |0> ┤ H ├─╫──╫─┤M├
          └───┘ ║  ║ └╥┘
c0_0: 0   ══════╩══╬══╬═
                   ║  ║ 
c0_1: 0   ═════════╩══╬═
                      ║ 
c0_2: 0   ════════════╩═
 
'''

backend = qk.BasicAer.get_backend('qasm_simulator')

def rand_int():
    new_job = qk.execute(circ, backend, shots=1)
    bitstring = new_job.result().get_counts()
    bitstring = list(bitstring.keys())[0]
    integer = int(bitstring, 2)
    
    return integer

a = rand_int()
print (a)

# >>> 5