Random Number Generation Using randint()

The random module provides the randint() function wich generates integers within specified bounds inclusively. To create a four-digit number ranging from 1000 to 9999:

import random

security_code = random.randint(1000, 9999)
print("Generated security code:", security_code)

Alternative Approach with randrange()

Similar to randint(), the randrange() method produces pseudo-random values. How ever, its uper limit is exclusive:

import random

temporary_pin = random.randrange(1000, 10000)
print("Temporary PIN generated:", temporary_pin)

String-Based Generation Technique

A more flexible approach combines character selection with string operations. This method constructs numeric strings digit by digit:

from random import choice
import string

digit_pool = string.digits
verification_code = ''.join(choice(digit_pool) for _ in range(4))
print("Verification code created:", verification_code)

This technique offers greater control over character composition and can be easily modified for different length requirements.