chore(python): Prefer provided project_name to environment in tracing context

python/.bumpversion.cfg

@@ -1,3 +1,3 @@
 [bumpversion]
 current_version = 0.4.9
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)
@@ -7,10 +7,6 @@
 commit = True
 tag = True
 
-[bumpversion:file:pyproject.toml]
-search = version = "{current_version}"
-replace = version = "{new_version}"
-
 [bumpversion:file:langsmith/__init__.py]
 search = __version__ = "{current_version}"
 replace = __version__ = "{new_version}"

python/langsmith/__init__.py

@@ -19,9 +19,7 @@
     from langsmith.testing._internal import test, unit
     from langsmith.utils import ContextThreadPoolExecutor
 
-# Avoid calling into importlib on every call to __version__
-
-__version__ = "0.4.14"
+__version__ = "0.4.15"
 version = __version__  # for backwards compatibility
 
 

python/langsmith/run_helpers.py

@@ -141,7 +141,12 @@ def tracing_context(
         )
     current_context = get_tracing_context()
     parent_run = (
-        _get_parent_run({"parent": parent or kwargs.get("parent_run")})
+        _get_parent_run(
+            {
+                "parent": parent or kwargs.get("parent_run"),
+                "project_name": project_name,
+            }
+        )
         if parent is not False
         else None
     )

python/langsmith/run_trees.py

@@ -837,8 +837,8 @@ def from_headers(
             init_args["parent_run_id"] = parsed_dotted_order[-2][1]
         # All placeholders. We assume the source process
         # handles the life-cycle of the run.
-        init_args["start_time"] = init_args.get("start_time") or datetime.now(
-            timezone.utc
+        init_args["start_time"] = (
+            init_args.get("start_time") or parsed_dotted_order[-1][0]
         )
         init_args["run_type"] = init_args.get("run_type") or "chain"
         init_args["name"] = init_args.get("name") or "parent"
@@ -1113,7 +1113,9 @@ def _parse_dotted_order(dotted_order: str) -> list[tuple[datetime, UUID]]:
     parts = dotted_order.split(".")
     return [
         (
-            datetime.strptime(part[:-TIMESTAMP_LENGTH], "%Y%m%dT%H%M%S%fZ"),
+            datetime.strptime(part[:-TIMESTAMP_LENGTH], "%Y%m%dT%H%M%S%fZ").replace(
+                tzinfo=timezone.utc
+            ),
             UUID(part[-TIMESTAMP_LENGTH:]),
         )
         for part in parts

python/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "langsmith"
-version = "0.4.14"
+dynamic = ["version"]
 description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform."
 authors = [
     {name = "LangChain", email = "support@langchain.dev"},