Use time.time_ns() to default-initialize (#16)

Fix #12.
mdomke · Mar 19, 2024 · 5e1f26f · 5e1f26f
1 parent 341a7a0
commit 5e1f26f
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diff --git a/ulid/__init__.py b/ulid/__init__.py
@@ -70,7 +70,9 @@ class ULID:
     def __init__(self, value: bytes | None = None) -> None:
         if value is not None and len(value) != constants.BYTES_LEN:
             raise ValueError("ULID has to be exactly 16 bytes long.")
-        self.bytes: bytes = value or ULID.from_timestamp(time.time()).bytes
+        self.bytes: bytes = (
+            value or ULID.from_timestamp(time.time_ns() // constants.NANOSECS_IN_MILLISECS).bytes
+        )
 
     @classmethod
     @validate_type(datetime)

diff --git a/ulid/constants.py b/ulid/constants.py
@@ -1,4 +1,5 @@
 MILLISECS_IN_SECS = 1000
+NANOSECS_IN_MILLISECS = 1000000
 
 TIMESTAMP_LEN = 6
 RANDOMNESS_LEN = 10