{"library":"python-ulid","title":"python-ulid","description":"python-ulid is a Python library that provides Universally Unique Lexicographically Sortable Identifiers (ULIDs). ULIDs are designed to be compatible with UUIDs but offer better performance for database indexing due to their time-based sort order. The library is actively maintained with regular updates, currently at version 3.1.0, and often introduces new features and stricter validation.","language":"python","status":"active","last_verified":"Wed May 20","install":{"commands":["pip install python-ulid"],"cli":null},"imports":["from ulid import ULID"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"from ulid import ULID\nimport time\n\n# Generate a new ULID\nulid_obj = ULID()\nprint(f\"Generated ULID: {ulid_obj}\")\nprint(f\"As string: {str(ulid_obj)}\")\nprint(f\"As bytes: {bytes(ulid_obj)}\") # requires >=2.3.0\nprint(f\"Timestamp (float): {ulid_obj.timestamp()}\")\nprint(f\"Datetime: {ulid_obj.datetime()}\")\n\n# Generate multiple ULIDs quickly to demonstrate monotonicity (requires 3.1.0+)\nprint(\"\\nMonotonicity check (same millisecond - may not trigger in all environments):\")\n# Simulate a very fast loop within a single millisecond\nulids_in_ms = []\nfor _ in range(5):\n    ulids_in_ms.append(ULID())\n    # Introduce a tiny delay if needed to help simulate\n    # pass # time.sleep(0.000001)\n\nfor u in ulids_in_ms:\n    print(f\"  {u}\")\n\n# Note: Asserting strict inequality `ulids_in_ms[i] < ulids_in_ms[i+1]` is generally true\n# due to monotonicity, but for simplicity, we just print here.\n# The library ensures ULIDs are unique and sorted within the same millisecond.\n\n# Parse a ULID from a string (ULID.parse() introduced in 3.0.0)\nulid_str = \"01HASJFZZ862S826DA2NJK4WMT\" # Example ULID\nparsed_ulid = ULID.parse(ulid_str)\nprint(f\"\\nParsed ULID: {parsed_ulid}\")\nprint(f\"Parsed ULID equals original string: {str(parsed_ulid) == ulid_str}\")\n\n# Convert to UUID (ULID.to_uuid4() introduced in 2.1.0)\nuuid_obj = ulid_obj.to_uuid4()\nprint(f\"Converted to UUID: {uuid_obj}\")","lang":"python","description":"This quickstart demonstrates how to generate ULIDs, convert them to string and bytes, parse them from strings, and shows the monotonicity feature introduced in 3.1.0 for sub-millisecond generation. 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