python-ulid

from ulid import ULID import time # Generate a new ULID ulid_obj = ULID() print(f"Generated ULID: {ulid_obj}") print(f"As string: {str(ulid_obj)}") print(f"As bytes: {bytes(ulid_obj)}") # requires >=2.3.0 print(f"Timestamp (float): {ulid_obj.timestamp()}") print(f"Datetime: {ulid_obj.datetime()}") # Generate multiple ULIDs quickly to demonstrate monotonicity (requires 3.1.0+) print("\nMonotonicity check (same millisecond - may not trigger in all environments):") # Simulate a very fast loop within a single millisecond ulids_in_ms = [] for _ in range(5): ulids_in_ms.append(ULID()) # Introduce a tiny delay if needed to help simulate # pass # time.sleep(0.000001) for u in ulids_in_ms: print(f" {u}") # Note: Asserting strict inequality `ulids_in_ms[i] < ulids_in_ms[i+1]` is generally true # due to monotonicity, but for simplicity, we just print here. # The library ensures ULIDs are unique and sorted within the same millisecond. # Parse a ULID from a string (ULID.parse() introduced in 3.0.0) ulid_str = "01HASJFZZ862S826DA2NJK4WMT" # Example ULID parsed_ulid = ULID.parse(ulid_str) print(f"\nParsed ULID: {parsed_ulid}") print(f"Parsed ULID equals original string: {str(parsed_ulid) == ulid_str}") # Convert to UUID (ULID.to_uuid4() introduced in 2.1.0) uuid_obj = ulid_obj.to_uuid4() print(f"Converted to UUID: {uuid_obj}")