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Generating random Id's in Python

Last Updated : 07 Jan, 2025

Generating random IDs in Python is useful when we need unique identifiers for things like user accounts, sessions, or database entries. In this article we will see Various methods to Generate Random ID's in Python.

Using random.randint()

random.randint() method in Python is used to generate random integers within a specified range. It's a simple and efficient way to create random IDs for various purposes like user IDs or order numbers. This method guarantees that the generated numbers will fall between the given lower and upper bounds (inclusive).

Python


 import random

# Generate 10 random IDs between 1 and 100
res = [random.randint(1, 100) for _ in range(10)]
print(res)

Output

[88, 21, 41, 77, 97, 43, 8, 9, 85, 36]

Explanation:

random.randint(1, 100): This generates a random integer between 1 and 100.
[random.randint(1, 100) for _ in range(10)]:This repeats this 10 times to create a list of 10 random numbers.

Using secrets Module

secrets module is part of Python's standard library and is designed for cryptographically secure random numbers, making it suitable for applications where security is required.

Python


 import secrets
# Generate 10 secure random IDs between 1 and 100
res = [secrets.randbelow(100 - 1 + 1) + 1 for _ in range(10)]
print(res)

Output

[46, 3, 34, 17, 18, 90, 36, 16, 42, 31]

Explanation:

secrets.randbelow(100) :This generates a random number between 0 and 99.
+ 1 :This shifts the range to 1–100.
List comprehension:This repeats this process 10 times to generate 10 random numbers.

Using uuid

If we need globally unique random IDs (rather than simple integer IDs), the uuid module can be used to generate a universally unique identifier (UUID) based on random values.

Python


 import uuid

# Generate 10 UUID random IDs
res = [str(uuid.uuid4()) for _ in range(2)]
print(res)

Output

['fb76a31d-6e83-439a-8e91-c973f0ddb4b7', 'c8fe7a1c-f606-4561-ada9-bb21603a0040']

Explanation:

uuid.uuid4():This generates a random UUID.
List comprehension: This creates 2 UUIDs, converting each to a string.
print(res):This displays the list of UUIDs.

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