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Generate UUIDs in Python

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[ Code Example - Quick Summary ]

Language: Python

What: Generate UUIDs in Python using the built-in <code>uuid</code> module. No external dependencies required. Supports UUID1, UUID4, and UUID5.

Try it: Use our interactive Uuids generator or integrate this code into your Python application.

Generate UUIDs in Python using the built-in uuid module. No external dependencies required. Supports UUID1, UUID4, and UUID5. Looking for other languages? Check our code examples in PHP , JavaScript , Java , C# , C++ , Ruby and Go or use our interactive web generator.

Python Code Example

import uuid

# UUID v4 (random)
uuid4 = uuid.uuid4()
print(uuid4)  # Example: 3d6f9e64-7d8a-4c3e-8f2b-1a4e5c6d7e8f
print(str(uuid4))  # String representation

# UUID v1 (timestamp + MAC address)
uuid1 = uuid.uuid1()
print(uuid1)  # Example: 6ba7b810-9dad-11d1-80b4-00c04fd430c8

# UUID v5 (namespaced)
namespace = uuid.NAMESPACE_DNS
name = 'example.com'
uuid5 = uuid.uuid5(namespace, name)
print(uuid5)  # Always same: cfbff0d1-9375-5685-968c-48ce8b15ae17

# Parse and validate UUID
uuid_string = '3d6f9e64-7d8a-4c3e-8f2b-1a4e5c6d7e8f'
parsed_uuid = uuid.UUID(uuid_string)
print(parsed_uuid.version)  # Outputs: 4
print(parsed_uuid.hex)  # Hex without dashes: 3d6f9e647d8a4c3e8f2b1a4e5c6d7e8f

# Generate multiple UUIDs
uuids = [str(uuid.uuid4()) for _ in range(5)]
print(uuids)

[EXPLANATION]

The uuid module is part of Python's standard library. UUID4 uses os.urandom() for cryptographic randomness. UUID1 includes timestamp and MAC address (less private). UUID5 is deterministic for given namespace+name.

Expected Output

3d6f9e64-7d8a-4c3e-8f2b-1a4e5c6d7e8f
6ba7b810-9dad-11d1-80b4-00c04fd430c8
cfbff0d1-9375-5685-968c-48ce8b15ae17
4
3d6f9e647d8a4c3e8f2b1a4e5c6d7e8f

Common Use Cases

Django model primary keys
Flask session identifiers
PostgreSQL UUID columns
Celery task IDs
AWS resource tagging
Data pipeline job identifiers

Important Notes

UUID4 is most common (random, no privacy concerns)
UUID1 exposes MAC address (avoid for privacy)
Python's uuid module is thread-safe
Convert to string with str(uuid)

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